Event calendar file
from 29 May 2014 to 3 June 2014
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$B$ decays with leptons in the final states are in general affected by small theoretical uncertainties and have quite clean experimental signatures. These makes the semileptonic $B\to X l \nu$ and $B\to X l l$ channels extremely interesting to search for physics beyond the Standard Model directly through the effect that new particles can give to some of these channels or indirectly through the cle
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Presented by Marcello ROTONDO
on
2 Jun 2014
at
17:10
Heavy charmonia and bottomonia in a deconfined quark-gluon plasma are studied by considering the $B_c$ family of mesons. With the introduction of this bound state of a charm and a beauty quark at finite temperature the behavior of the quarkonium is investigated in an energy region between the $\psi$ and the $\Upsilon$ states. Calculations are performed within a potential model.
Presented by Piotr CZERSKI
on
2 Jun 2014
at
15:00
Whether a Kaonic bound system, $K^-pp$, exists or not is one of important issues in Strangeness nuclear physics at J-PARC. Based on low-energy $KN$ scattering data and kaonic-atom X-ray data, it is well known that the $KN$ interaction near threshold has a strong attraction in the isospin 0 channel. It can be a driving force to form the Kaonic bound state, $K^-pp$. The FINUDA and DISTO collaboratio
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Presented by Tomofumi NAGAE
on
31 May 2014
at
12:00
Since many years the strong final state interaction between eta mesons and light nuclei and the discussed possibility for the formation of $\eta$-mesic nuclei has attracted broad experimental and theoretical investigations. Prominent examples are production experiments on the $^3{He$-\eta$ final state which present an unexpected strong total cross section enhancement at threshold, indicating the p
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Presented by Alfons KHOUKAZ
on
3 Jun 2014
at
11:30
Quantum entanglement of K and B mesons allows for a direct experimental test of time-reversal symmetry independent of CP violation. The T symmetry can be probed by exchange of initial and final states in the reversible transitions between flavor and CP-definite states of the mesons which are only connected by the T conjugation. While such a test was successfully performed by the BaBar experiment w
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Presented by Aleksander GAJOS
on
31 May 2014
at
15:00
$K_{\ell4}$ decays are interesting for several reasons: they allow an accurate measurement of a combination of S-wave $\pi\pi$ scattering lengths, one form factor is connected to the chiral anomaly and the decay is the best source for the determination of some low-energy constants of ChPT.
We present a dispersive approach to $K_{\ell4}$ decays, which takes rescattering effects fully into account.
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Presented by Peter STOFFER
on
31 May 2014
at
15:00
In preparation for the forthcoming experiments on multi-strangeness baryon production at JLab and JPARC, we analyze the general features of Cascade production in both the anti-kaon- and photon-induced reactions. Particular attention is paid to the spin structure of the reaction amplitude for producing Cascade resonances with the emphasis on identifying the spin observables required to determine t
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Presented by Benjamin JACKSON
on
30 May 2014
at
15:20
Starting from general considerations of the pion scalar form factor in elastic region, the parametrization of tangens of the S-wave isoscalar $\pi-\pi$ scattering phase shift is found to be rational function in the pion c.m. three-momentum variable q with real coefficients. As a result, this phase shift can achieve asymptotically either the value $\pi/2$ or 0, depending on the fact, if degree of
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Presented by Stanislav DUBNICKA
on
2 Jun 2014
at
16:00
Recent studies of kaonic atoms, few-body kaonic quasibound states and kaonic
nuclei based on s-wave ${\bar K}N$ chiral interaction models that are consistent
with the SIDDHARTA $K^-$ hydrogen data are reviewed, focusing on the $K^-pp$
dibaryon. Remarks are made on low-lying dibaryons other than $\Lambda(1405)N$,
particularly those involving p-wave interactions of pions with octet baryons.
Presented by Avraham GAL
on
2 Jun 2014
at
09:30
The B factories provide a unique playground for studying the properties of conventional and exotic quarkonium states.
We report on a variety of recent results obtained using the full data set collected with the BaBar detector at the PEP-II $e^+e^-$ collider. Among the others, we present measurements of the double charmonium production, searches for charmonium-like states, as well as studies o
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Presented by Claudia PATRIGNANI
on
30 May 2014
at
10:30
The nucleon excitation scheme has been under intensive investigation with meson photoproduction experiments during the last few years world wide. Currently, a lot of new experimental results are coming out from the CLAS experiment at Jlab, the Crystal Barrel experiment at the ELSA accelerator in Bonn and the Crystal Ball experiment at the MAMI accelerator in Mainz. These experiments focus on the
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Presented by Reinhard BECK
on
29 May 2014
at
11:30
The study of the structure and properties of mesons in an important part in understanding QCD. Searching for states described by the Quark Model and more complex states such as hybrids or glue balls is needed to understand the confinement of quarks and the behavior of gluons. CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab (JLab) offers a unique set of opportunities in meson spectrosco
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Presented by Diane SCHOTT
on
29 May 2014
at
13:00
This talk will present a proposal for a first conclusive experimental test of revealing correlations that are stronger than those allowed by classical physics [1]. Surprisingly, in a certain setup the tiny difference between a world of matter and a world of antimatter, the famous violation of the CP symmetry (C -- charge conjugation; P -- parity), becomes responsible for the possibility of reveali
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Presented by Beatrix C. HIESMAYR
on
31 May 2014
at
09:00
Exclusive central hadronic systems from hadron collisions result primarily from double pomeron exchange, and these have very restrictive quantum numbers: $I^{G}J^{PC}$ = $0^+ (\text{even})^{++}$. This "quantum number filter" is a powerful tool for meson spectroscopy in the isoscalar sector, especially for glue-rich states. In addition it provides information on the nature of the pomeron.
We have
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Presented by Maria ŻUREK
on
2 Jun 2014
at
17:50
New final results from an analysis of about 400 $K^\pm \rightarrow \pi^\pm \gamma \gamma$ rare decay candidates collected by the NA48/2 and NA62 experiments at CERN during low intensity runs with minimum bias trigger configurations are presented. The results include a model-independent decay rate measurement and fits to Chiral Perturbation Theory (ChPT) description. The data support the ChPT predi
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Presented by Francesco GONNELLA
on
30 May 2014
at
17:30
Symmetries and symmetry breaking patterns in the non-purtubative regime of QCD is a key issue of the physics program of WASA-at-COSY. One objective is the determination of possible $p$-wave contributions to the charge symmetry breaking amplitude in the reaction $dd\to ^4\!\mathrm{He}\pi^0$ at 1.2 GeV/c beam momentum (corresponding to an excess energy of $Q=60\,\mathrm{MeV}$).
Charge symmetry is a
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Presented by Volker HEJNY
on
29 May 2014
at
17:50
We enlarge the so-called Extended Linear Sigma Model (eLSM) by including the charm quark according to the global U(4)rxU(4)l global chiral symmetry. In the eLSM, besides scalar and pseudoscalar mesons, also vector and axial-vector mesons are present. Almost all the parameters of the model were fixed in a previous study of mesons below 2 GeV. In the extension to the four-flavor case, only three add
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Presented by Walaa ESHRAIM
on
31 May 2014
at
15:00
We present a new result from close to threshold measurement of excitation function for $pp\to pp\eta'$ reaction with the accuracy better for cross section and excess energy determination with respect to previous measurements. The cross sections determined at five excess energy values down to 0.76 MeV enabled an extraction of the scattering length of the $\eta'$-proton interaction in the vacuum.
Presented by Eryk CZERWIŃSKI
on
30 May 2014
at
18:10
Ultra-peripheral collisions are characterized by an impact parameter exceeding the sum of the two nuclear radii. The photon flux of heavy ions such as Pb is enhanced by the nucleus charge squared. This allows to study gamma-nucleus processes, such as the production of $\rho^0$ vector mesons decaying into two pions, as well as gamma-gamma processes, e.g., the continuum production of electron pairs.
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Presented by Christoph MAYER
on
29 May 2014
at
17:10
Understanding of near-threshold pion production is of significant importance since it allows a direct test of chiral EFT, probes $NN$ dynamics at intermediate energies and provides access to isospin violation in few-nucleon processes [1].
It has been known since years that neutral pion production in $pp \to pp \pi^0$ is the most challenging process since the experimental cross-section in this cha
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Presented by Arseniy FILIN
on
29 May 2014
at
18:10
Exclusive electroproduction of mesons have been the subject of many studies in the last years. I will focus on results obtained within kT-factorization where one can use models of dipole cross-sections and within the modified perturbative approach where one can test and constrain GPD models. I will present comparison of the different predictions obtained within these models with available data.
Presented by Adrien BESSE
on
2 Jun 2014
at
16:50
The $\Lambda^*$=$\Lambda (1405)$ plays an essential role in forming anti-kaonic nuclear clusters, the simplest one of which is $K^-pp=(K^-p)-p=\Lambda^*-p$. In relation to this clustering structure we have examined the reaction processes, $^3$He$(K^-,n)K^-pp$ and D$(\pi^+,K^+)K^-pp$, of the recent E15 and E27 J-PARC experiments. The $\Lambda^*-p$ structure interacting with "super-strong force" due
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Presented by Yoshinori AKAISHI
on
31 May 2014
at
12:30
A quasi two-body QCD factorization is used to study the $D^0 \rightarrow K^0_S \pi^+ \pi^-$ decay channel. Starting from the weak effective Hamiltonian, 28 tree and annihilation (W-exchange) amplitudes build up the full $D^0 \rightarrow K^0_S \pi^+ \pi^-$ amplitude [1]. The meson-meson final state interactions are described by the kaon-pion and pion scalar and vector form factors for the S and P w
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Presented by Leonard LEŚNIAK
on
2 Jun 2014
at
15:40
The cosmological standard model assumes that a large fraction of the universe is made of dark matter while only a small fraction of matter is made of ordinary baryonic matter. Up to now, the nature of dark matter is unknown, and this is certainly one of the most pressing puzzles of today's physics. Dark matter interacts in cosmology only via gravitation with ordinary matter. In particle physics, h
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Presented by Harald MERKEL
on
2 Jun 2014
at
11:30
The covariant quark model is a successful tools for a unified description of the multiquark states (mesons, baryons, tetraquarks, ...) which is based on an effective quantum field approach to hadronic interactions. It is well suited to provide a theoretical framework in connection with existing or expected results from heavy quark factories. The model, its basic features and chosen results will be
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Presented by Andrej LIPTAJ
on
2 Jun 2014
at
17:10
Despite their long painful history dibaryon searches (where dibaryon means a baryon number $B=2$ state independently on the internal structure: genuine six-quark state/baryonic-molecule) have recently received new interest, in particular by the recognition that there are more complex quark configurations than just the familiar $q\bar{q}$ and $qqq$ systems. The "hidden color" aspect makes dibaryons
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Presented by Mikhail BASHKANOV
on
31 May 2014
at
15:00
The rare $K^\pm\to\pi^\pm\pi^0 e^+e^-$ decay, currently under analysis by the NA62 Collaboration, is considered. We have performed two theoretical approaches to calculate the differential decay width - in the kaon rest frame, where we use Cabibbo-Maksimovicz variables, and in the center-of-mass system of the lepton pair. The latter essentially simplifies the computations. A comparison between the
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Presented by Sergey GEVORKYAN
on
30 May 2014
at
15:00
I will give a short introduction of diffractive meson production. I will review the data situation from the COMPASS experiment, CDF at the TEVATRON, the RHIC experiments and the ALICE and LHCb experiments at the LHC.
Presented by Rainer SCHICKER
on
29 May 2014
at
15:20
Understanding the mechanism of the non-strange tensor meson photoproduction is essential for description of the light meson spectrum. This is because the $f_2(1270)$ photoproduction amplitude is prominent in partial wave analyses where two pions or two kaons in the final state are involved. Description of this sector is complicated, however, by possible existence of scalar and tensor glueballs whi
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Presented by Łukasz BIBRZYCKI
on
31 May 2014
at
15:00
The anomalous magnetic moment of the muon has been measured and computed to very high precision of about 0.5 ppm. For more than a decade, a discrepancy has persisted between the experiment and the Standard Model prediction, now of more than 3 sigma. Forthcoming experiments at FNAL and J-PARC aim at reducing the experimental error by a factor of 4.
The main uncertainty of the theory prediction is
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Presented by Peter STOFFER
on
30 May 2014
at
17:50
The elastic form factors characterize the distributions of charge and
magnetization in momentum space and are important input for calculations of
strong interaction phenomena and nuclear structure. The dramatic discrepancy
in the observed ratio of elastic proton form factors between the Rosenbluth
separation and polarization transfer methods has invoked numerous theoretical
and experimen
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Presented by Michael KOHL
on
29 May 2014
at
15:50
We investigate the effects of (axial)vector mesons on the chiral phase transition in the framework of an SU(3), (axial)vector meson extended linear sigma model with additional constituent quarks and Polyakov loops. We determine the parameters of the Lagrangian at zero temperature in a hybrid approach, where we treat the mesons at tree-level, while the constituent quarks at 1-loop level. We assume
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Presented by Peter KOVACS
on
30 May 2014
at
17:10
Since the 1950's people search for permanent Electric Dipole Moments (EDM) of fundamental systems, as a non-zero EDM would be an unambiguous manifestation of parity (P) and time reversal symmetry (T) violation. Assuming conservation of CPT, T violation in a fundamental system also means CP violation. EDMs are considered promising candidate systems, as this turns out to be a natural consequence of
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Presented by Peter FIERLINGER
on
29 May 2014
at
10:30
Electromagnetic calorimeter (ECAL) is being developed to complement dilepton spectrometer HADES currently operating on the beam of the SIS18 heavy-ion synchrotron at GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany. ECAL will enable the HADES@FAIR experiment to measure data on neutral meson production in heavy ion collisions at the energy range of 2-10 A GeV on the beam of future
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Presented by Pablo RODRÍGUEZ RAMOS
on
31 May 2014
at
15:00
Electromagnetic structure of the complete nonet of vector mesons is investigated in the framework of the Unitary and Analytic model and insufficient experimental information on it is discussed.
Presented by Cyril ADAMUSCIN
on
31 May 2014
at
15:00
The long history of dibaryon searches dating back to the fifties has been a very changeful one - with many ups and downs. After Gell-Mann's famous paper on the quark model Dyson and Xuong were the first to correlate this topic with SU(6) and six quark systems -- still in the year 1964. But it was not until Jaffe's note in 1977 about a bound $\Lambda \Lambda$ system, the H-dibaryon, when a real rus
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Presented by Heinz CLEMENT
on
30 May 2014
at
12:30
One of the main aspects of the WASA-at-COSY physics program are studies on rare and forbidden decays of light mesons. In this context a large data set of $\eta$ mesons has been produced in proton proton scattering in order to investigate the decay properties of this meson. This high statistic measurement allows, e.g., for the search for the C parity violating reaction $\eta \rightarrow \pi^0 + \te
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Presented by Kay DEMMICH
on
31 May 2014
at
15:00
We discuss exclusive central diffractive production of scalar ($f_{0}(980)$, $f_{0}(1370)$, $f_{0}(1500)$), pseudoscalar ($\eta$, $\eta'(958)$), and vector ($\rho^{0}$) mesons in proton-proton collisions. The amplitudes are formulated in terms of effective vertices required to respect standard rules of Quantum Field Theory and propagators for the exchanged pomeron and reggeons [1]. Different pomer
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Presented by Piotr LEBIEDOWICZ
on
2 Jun 2014
at
18:10
We present results based on our new paper [1]. The amplitude for $\gamma p \to V p$ is calculated in a pQCD $k_{T}$-factorization approach. The coresponding total cross section for different unintegrated gluon distributions is calculated and compared with new HERA data for photon-proton collisions. We also compare the total cross section for $\gamma p \to V p$ reaction with recent data extracted b
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Presented by Anna CISEK
on
30 May 2014
at
15:20
Exclusive production has been proposed as a unique environment in which to study vector meson photoproduction, as well as light meson production via Double-Pomeron exchange. In this talk we present CMS measurements of photon-induced and Central Exclusive Production from Run 1 of the LHC. The results, based on up to 5 fb$^{-1}$ of $pp$ collisions collected at $\sqrt{s}=7$ TeV, are compared to theor
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Presented by Gustavo GIL DA SILVEIRA
on
2 Jun 2014
at
16:00
I will present lattice results on meson spectroscopy. The emphasis will be on interesting states near thresholds, like the recently discovered charged $Z_c$. I will also review the pioneering attempts to extract the strong decay widths of various mesonic resonances from lattice.
Presented by Sasa PRELOVSEK
on
31 May 2014
at
10:30
The latest years have seen a resurrection of interest in searches for exotic states motivated by tantalising observations by Belle and CDF. Using the data collected at pp collisions at 7 and 8 TeV by the LHCb experiment we present studies of the $X(3872)$ properties including its decay rate to $\psi(2S)\gamma$, as well as recent studies of putative states such as the $Z(4430)^+$.
Presented by Michal KREPS
on
30 May 2014
at
15:40
Dp breakup reaction occupied large phase space. Two and three nucleon forces and relativistic effects can be investigated under various detector configuration. The results of simulation of dp breakup reaction in energy region from 300 to 500 MeV are presented. Preliminary results obtained at 300, 400 and 500 MeV of deuteron energy at some detector configurations at Nuclotron such as future plans i
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Presented by Marian JANEK
on
31 May 2014
at
15:00
Few-nucleon systems are basic laboratories to study nuclear forces. Among them, the system composed of three nucleons (3N) is the simplest and non-trivial environment, in which models of nuclear interaction can be tested. Nucleon-nucleon (NN) interaction is here dominant; there are, however, reasons to assume existence of additional dynamics, referred to as the three-nucleon force (3NF) [1]. Nowad
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Presented by Ghanshyam KHATRI
on
31 May 2014
at
15:00
The BES data on the $J/\psi\to\etaK*^0\bar{K}*^0$ reaction show a clear enhancement in the $K*^0\bar{K}*^0$ mass distribution close to the threshold of this channel. Such an enhancement is usually a signature of a L=0 resonance around threshold, which in this case would correspond to an h1 state with quantum numbers $I^G(J^{PC})=0^-(1^{+−})$. A state around 1800 MeV results from the interaction
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Presented by Eulogio OSET
on
30 May 2014
at
13:00
As quark masses come closer to their physical values in lattice simulations, finite volume effects dominate the level spectrum. Methods to extract excited mesons from the finite volume will be discussed, like moving frames in the presence of coupled channels. Effective field theory can be used to stabilize the determination of the resonance spectrum.
Presented by Michael DORING
on
2 Jun 2014
at
17:50
The $\bar{P}$ANDA detector is a multi-purpose experiment to be installed at the Facility for Antiproton and Ion Research (FAIR). It is currently under active development and will exploit the possibilities offered by the antiproton beam of 1.5 to 15 GeV/c that will be available at the High Energy Storage Ring (HESR) of FAIR. One of the many physics goals of $\bar{P}$ANDA is to explore the structure
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Presented by Ermias ATOMSSA
on
2 Jun 2014
at
17:30
Low-energy QCD and specifically Chiral Perturbation Theory (ChPT) calculated $\pi\pi$ and $\pi K$ scattering lengths with per cent precision. For processes involving $u$- and $d$-quarks theoretical predictions have been experimentally checked by $\pi^+\pi^-$~atom lifetime measurement [1] and by analysis of $K$-decays [2,3]. Detection and lifetime measurement of $\pi K$~atom cast a look into proces
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Presented by Mikhail ZHABITSKY
on
2 Jun 2014
at
10:00
We present evidence of associated vector boson+prompt $J/\psi$ production and measure its production rate. This is a key observable to further the understanding of quarkonium production mechanisms. We estimate the relative contributions to the signal from single and double parton scattering and discuss possible implications of this novel final state for study of multiple parton interactions. Singl
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Presented by Stefanos LEONTSINIS
on
30 May 2014
at
16:00
The BGO-OD experiment, set up at the ELSA accelerator facility in Bonn, combines the highly segmented BGO calorimeter with a particle tracking magnetic spectrometer at forward angles. In this configuration the BGO-OD experiment is uniquely suited for a systematic study of meson photoproducion. It is capable of detecting final states of mixed charge with nearly $4\pi$ acceptance and with very high
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Presented by Andreas BELLA
on
29 May 2014
at
17:10
An important first step in the program of hadronization of chiral quark models
is the bosonization in meson and diquark channels.
This procedure is presented at finite temperatures and chemical potentials
for the SU(2) flavor case of the NJL model.
The thermodynamic potential is obtained in the gaussian approximation for the
meson and diquark fields and it is given the Beth-Uhlenbeck form
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Presented by David BLASCHKE
on
2 Jun 2014
at
13:00
The High Acceptance Di-Electron Spectrometer (HADES) installed at GSI in Darmstadt is a second generation experiment designed to measure e+e- pairs (dielectrons) in the 1-3.5 GeV/nucleon energy regime. The main goal of the experiment is to measure dielectron emission from a compressed baryonic matter formed in heavy ion collisions and ultimately learn about in-medium hadron properties. In additi
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Presented by Beatrice RAMSTEIN
on
29 May 2014
at
12:30
Hadron production in heavy-ion collisions at the LHC through gluon-gluon and gluon-valence quark collisions can be described in various microscopic and macroscopic models. Here I use a phenomenological three-sources approach that allows to precisely account for the charged-hadron pseudorapidity distributions measured by the ALICE collaboration in Pb-Pb collisions as function of centrality at the c
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Presented by Georg WOLSCHIN
on
3 Jun 2014
at
10:00
Decay studies of the $\omega$, a light vector meson, covers a span of interesting physics including $3\pi$ decay dynamics, the $\rho - \omega$ mixing and the $\omega-\pi^0$ transition form factor. The ongoing study presented by this poster covers the first two mentioned topics through measurements of the $\omega\to\pi^+\pi^-\pi^0$ and $\omega\to\pi^+\pi^-$ channels where the $\omega$ was produced
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Presented by Lena HEIJKENSKJÖLD
on
31 May 2014
at
15:00
Short-lived hadronic resonances constitute a sensitive probe of the dynamical evolution of the fireball created in heavy-ion collisions, since a significant fraction of them decay in the time span (of the order of few fm/c) between chemical and kinetic freeze-out. Competing processes, such as regeneration and re-scattering, may alter the ratio of the resonance to non-resonance yields. The study o
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Presented by Enrico FRAGIACOMO
on
31 May 2014
at
15:00
CMS experiment accumulated 20 fb$^{-1}$ and 5 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}=8$ TeV and $\sqrt{s}=7$ TeV in Run I. We have analyzed these data and produced fruitful results on heavy meson production and conventional and exotic meson spectroscopy. This talk will present new results from CMS covering $J/\Psi$, $\Upsilon$ cross section and polarization measurements, $B_c$ bran
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Presented by Kai YI
on
3 Jun 2014
at
09:30
The copious production of charm mesons at HERA has allowed QCD to be probed in open charm and charm vector meson production. Elastic and proton-dissociatve photoproduction of $J/\psi$ mesons have been measured at HERA. The data are compared to other measurements and the $W$ and $t$ dependences are parametrised using phenomonological fits. The $\psi(2S)$ state has also been measured exclusively and
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Presented by Jan FIGIEL
on
30 May 2014
at
17:50
The production of charmonia $J/\psi$(1S) and $\psi^\prime$(2S) in the antiproton-nucleus reactions at $p_{lab}=3-10$ GeV/c is studied on the basis of the Glauber model taking into account nuclear Fermi motion effects [1,2]. The main reaction channel is charmonium formation in an antiproton-proton collision. We show that the target mass dependence of the charmonium transparency ratio allows to dete
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Presented by Alexei LARIONOV
on
29 May 2014
at
18:10
In this talk, the latest BESIII results on charm physics will be presented, such as the strong phases in $D\to K_s\pi^+\pi^-$ and $D \to K^- \pi^+$, the $y_{cp}$ mixing parameters, $D$ purely leptonic decays and $D$ semi-leptonic decays. Many of these results are the most precise to date.
Presented by Peilian LIU
on
30 May 2014
at
17:10
The pion occupies a special place in nuclear physics: to many it is the "simplest hadron", however this is a misnomer. The pion encapsulates the myriad complexities of Quantum Chromodynamics (QCD), e.g., it is both a bound-state of a dressed-quark and a dressed-antiquark in quantum field theory and the Goldstone mode associated with dynamical chiral symmetry breaking in QCD. Using QCDs Dyson-Schwi
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Presented by Ian CLOET
on
31 May 2014
at
09:30
Recently a big progress in understanding and description of the $\pi\pi$ interactions has been made due to dispersive analyses with imposed crossing symmetry [1]. This has led to significant changes in the information on these interactions, (mostly below 1 GeV), presented in the Particle Data Tables 2012 [2]. Nevertheless old parameterizations of the $\pi\pi$ amplitudes with e.g. wide and heavy $f
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Presented by Vahabeddin NAZARI
on
31 May 2014
at
15:00
It is pointed out why a good understanding of the electromagnetic properties of light mesons is mandatory to explore the structure of hadrons, but also to improve the Standard Model predictions for quantities like $g-2$ of the muon or the rare decay of pseudoscalars to a dilepton [1]. Recent results for meson transition form factors, two-photon reactions and related quantities are shown [2,3,4].
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Presented by Stefan LEUPOLD
on
30 May 2014
at
18:10
Kaonic three-body $K^¯NN$, and of four-body $K^¯NNN$ and $K^¯K^¯ NN$ nuclei are studied within the method of hyperspherical functions in momentum representation, using realistic local and separable potential models for the nucleon-nucleon and kaon-nucleon interactions as well as for the kaon-kaon interaction. We solve nonrelativistic three- and four-body Schrodinger equation in momentum r
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Presented by Shalva TSIKLAURI
on
2 Jun 2014
at
15:20
The AMADEUS experiment deals with the investigation of the low-energy
kaon-nuclei hadronic interaction at the DA$\Phi$NE collider at LNF-INFN, which is fundamental to solve longstanding questions in the non-perturbative strangeness QCD sector. AMADEUS step 0 consisted in the analysis of 2004/2005 KLOE data, exploiting $K^-$ absorptions in $H$, ${}^4He$, ${}^{9}Be$ and ${}^{12}C$, leading to the f
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Presented by Kristian PISCICCHIA
on
31 May 2014
at
13:00
The Jagiellonian Positron Emission Tomography (J-PET) based on polymer scintillators is currently under development at the Jagiellonian University [1,2,3]. The novelty of the concept lies in employing strips of polymer scintillators instead of crystals as detectors of annihilation quanta, and in using (for the hit position reconstruction) the timing of signals instead of their amplitudes.
J-PET d
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Presented by Paweł MOSKAL
on
31 May 2014
at
15:00
The strong interaction of antikaons ($\bar{K}) with nucleons and nuclei in the low-energy regime is a fascinating topic because of the strong attraction, which is related to the question about kaonic nuclear bound states. A rather direct experimental access to the antikaon-nucleon interaction is provided by precision x-ray spectroscopy of transitions to low-lying states in light kaonic atoms like
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Presented by Johann MARTON
on
2 Jun 2014
at
09:00
The LHCb detector is a single-arm forward spectrometer optimized to study hadrons containing charm and beauty quarks. The detector has recorded about 3 fb$^{-1}$ of data during 2011 and 2012 operations of the Large Hadron Collider. In the talk, we present a description of the detector, a selection of latest and most important physics results, and we discuss as well the future and upgrade plans for
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Presented by Diego MILANES
on
30 May 2014
at
10:00
We report on new results in the field of charmonium and charmonium-like spectroscopy from the B factory experiments BABAR and BELLE as well as the BESIII experiment in Beijing. While the B-factory experiments have not been capable of running at center-of-mass energies in the vicinity of 4 GeV, BESIII has very recently analyzed a major data set taken at energies up to 4.6 GeV. Several charged state
... More
Presented by Yuping GUO
on
30 May 2014
at
09:30
The KLOE experiment in year 2013-14 obtained several results on i) CPT symmetry test with neutral kaons, ii) charged kaon branching fraction to 3 charged pions, iii) $\gamma$--$\gamma$ physics; iv) on the isospin-violating decay $\eta\to\pi^+\pi^-\pi^0$, sensitive to the light-quark mass ratio, v) on the form factors (TFF) in $\Phi\to\eta e^+e^-$ and $\Phi\to\pi^0 e^+e^-$ transitions, and on vi)
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Presented by Caterina BLOISE
on
31 May 2014
at
10:00
The experiments have been carried out with the SND detector at the VEPP-2000 $e^+e^-$ collider in the energy range from 0.3 to 2 GeV. The cross sections for the processes $e^+e^-\to 3\pi,\ 4\pi,\ \omega\pi^0,\ K^+K^-,\ \eta\pi^+\pi^-,\ \eta K^+K^-,\ \eta 3\pi,\ p\bar{p},\ n \bar{n}$ have been measured. The measured cross sections are fitted in extended vector meson dominance model, giving parame
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Presented by Sergey SEREDNYAKOV
on
2 Jun 2014
at
17:10
In this talk I will show how chiral effective field theory (chiral EFT) provides a deep insight into the structure of the nucleon in term of the low-energy symmetries of QCD. Later, I will present some of the more recent progresses in the determination of the scalar and electromagnetic structure of the nucleon from the relativistic formulation of chiral EFT. Finally, I will comment the impact of t
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Presented by Jose Manuel ALARCON SORIANO
on
30 May 2014
at
16:50
The COMPASS experiment at CERN has been playing an important role in the studies of the spin content of the nucleon. The Semi-Inclusive Deep Inelastic Scattering (SIDIS) process gives access to the transverse momentum dependent parton distribution functions (TMDs) by the measurement of azimuthal asymmetries that have been studied in COMPASS and published in recent years. TMDs are also accessible b
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Presented by Márcia QUARESMA
on
2 Jun 2014
at
17:30
We present the results of two-pion production in tagged quasi-free $np$ collisions at a proton incident beam energy of 1.25 GeV measured with the High-Acceptance Di-Electron Spectrometer (HADES) installed at GSI. The specific acceptance of HADES allowed for the first time to obtain high-precision data on $\pi^{+}\pi^{-}$ and $\pi^{-}\pi^{0}$ production in $np$ collisions in a region corresponding
... More
Presented by Aleksey KURILKIN
on
30 May 2014
at
17:30
The KLOE experiment has collected 2.5 fb$^{-1}$ at the peak of the phi resonance at the $e^+e^-$ collider DAPHNE in Frascati. A new beam crossing scheme, allowing for a reduced beam size and increased luminosity, is operating at DAPHNE. The upgraded KLOE-2 detector is successfully rolled in inside this new interaction region and is ready to acquire collision data.
The V$\to$Pgamma Dalitz decays,
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Presented by Ivano SARRA
on
30 May 2014
at
17:50
We will investigate the role of meson exchange currents in the description of the $\mu^{-}$+d $\rightarrow$ $\nu_{\mu}$+n+n and $\mu^{-}$+$^{3}$He $\rightarrow$ $\nu_{\mu}$+$^{3}$H reactions. They both are treated as the decay of the corresponding muonic atoms, with the muon initially on the lowest K shell. The muon binding energy in these atoms can be safely neglected and in the initial state we
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Presented by Alaa Eldeen ELMESHNEB
on
31 May 2014
at
15:00
The BaBar Collaboration has an intensive program studying the hadronic cross section at low-energy $e^+e^-$ collisions, accessible at BaBar via initial-state radiation (ISR). These measurements allow significant improvements in the accuracy of the predicted value of the muon anomalous magnetic moment, which is necessary for shedding light on the current ~3.5 sigma difference between prediction and
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Presented by Evgeny SOLODOV
on
30 May 2014
at
15:00
Meson properties are believed to have close connection to the fundamental theory, QCD, and have been studied for a long time both theoretically and experimentally. In this talk, we study the recent research activities in this field and consider mainly the deeply bound pionic atoms and the $¥eta$(958) mesic nuclei.
We report the new possibilities of the spectroscopic study of the pionic atoms us
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Presented by Satoru HIRENZAKI
on
3 Jun 2014
at
12:00
The 7 and 8 TeV $pp$ collision data collected by the LHCb experiment during 2011 and 2012 provide a rich sample of heavy flavour production and decays in which to study hadron properties. We present a summary of the recent experimental results from LHCb including studies of $D_J$ mesons, $B^{**}$. We also report a search for the doubly charmed baryon $\Xi_{cc}$.
Presented by Tomasz SZUMLAK
on
30 May 2014
at
17:30
The different amplitudes contributing to the decay of $B_s$ into $J/\psi\ \phi (\mu^+\mu^-K^+K^-)$ can be studied with a combined analysis of decay time and angular correlations. An analysis based on data collected in 2011 and with inital $B$-meson flavour tagging is presented, improving the accuracy in the CP-violating phase $\phi_s$ compared to the untagged analysis.
Presented by Pavol BARTOS
on
2 Jun 2014
at
18:10
We shall discuss to what extent the properties of pseudoscalar and vector mesons (e.g. $\eta$, $\omega$) bound in mesoatomic systems can become modified due to very strong static electromagnetic fields present in the close vicinity of the nucleus surface. Using the analogy with the behavior of ortho-positronium decaying in the magnetic field, we suggest that quantum superposition of spin-singlet a
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Presented by Peter FILIP
on
31 May 2014
at
15:00
We will present a three-dimensional (3D) description of muon induced deuteron disintegration. This reaction is treated as the decay of the muonic atom with the muon initially on the lowest K shell. Our aim is to calculate the total and differential decay rates. We work in momentum space and use 3D momentum eigenstates directly. This approach allowed us to calculate the appropriate nuclear matrix e
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Presented by Kacper TOPOLNICKI
on
31 May 2014
at
15:00
Engineers, scientists, and physicists around the world are working on high-energy physics with particle accelerators, energy from fusion, and astrophysics with advanced telescopes. It is common for these domain experts to need hardware and software that meet their measurement, diagnostic, control, interlock, and safety system requirements. From programming multicore embedded real-time systems that
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Presented by Wojciech SOMMER
on
29 May 2014
at
16:50
The $ppK^-$, a well established state in theory, is a hot candidate for a new kind of hadronic matter. A type of matter where kaons are bound to nucleons. The HADES spectrometer at GSI provides ideal conditions to test the existence of this cluster of particles. HADES has recorded $p+p$ collisions at a beam energy of 3.5 GeV that we have analysed for events where a $p$, $K^+$ and $\Lambda$ were pr
... More
Presented by Eliane EPPLE
on
2 Jun 2014
at
16:00
The EPECUR collaboration presents new high precision data on the pion-proton elastic scattering in the second resonance region. The experiment EPECUR is placed on the universal beam channel of the accelerator ITEP. The setup features 0.1% beam pion momentum tagging system; 25 cm long liquid hydrogen target, placed in mylar container and beryllium outer shell; low material wire drift chambers and h
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Presented by Igor ALEKSEEV
on
30 May 2014
at
15:00
We propose a new method of investigating the space-time evolution of meson production in heavy ion collisions, by making use of spectator-induced Coulomb effects. The presence of two nuclear remnants ("spectator systems") in the non-central collision generates a strong Coulomb field, which modifies the trajectories of charged final state hadrons. This results in:
- large distortions of charged me
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Presented by Andrzej RYBICKI
on
29 May 2014
at
17:50
We discuss the role of the non-perturbative pion dynamics on the near-threshold resonance X(3872) charmonium state, which is assumed to be an S-wave $D\bar D^*$ bound system [1,2]. The calculations are performed within the framework of coupled-channels Faddeev-type three-body equations for the $D\bar{D}\pi$ system in the $J^{PC}=1^{++}$ channel. The $\pi D$ interaction is parameterised via a $
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Presented by Vadim BARU
on
2 Jun 2014
at
15:40
The mass and decay width differences of charge and neutral members of the known $\rho$-meson families are determined by exploiting experimental data on $e^+e^-\to\pi^+\pi^-$ and $\tau^-\to\pi^-\pi^0\nu_{\tau}$ processes and by the Unitary and Analytic models of the corresponding electromagnetic a weak $\pi$ form factors.
Presented by Erik BARTOS
on
31 May 2014
at
15:00
ALICE is a dedicated experiment for measurements of heavy-ion collisions at the Large Hadron Collider (LHC). A wealth of experimental data recorded in 2010, 2011 and 2012 suggests that a strongly interacting de-confined medium is created in collisions of lead ions at a centre-of-mass energy $\sqrt{s_{\mathrm{NN}}}$ = 2.76 ${\mathrm{TeV}}$. In order to quantify the properties of this hot and dense
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Presented by Mateusz PŁOSKOŃ
on
3 Jun 2014
at
09:00
The Pierre Auger Observatory is the largest detector of ultra-high energy cosmic rays (UHECR) in the world. These particles, presumably protons or heavier nuclei of energies up to $10^{20}$ eV initiate extensive air showers which can be detected by sampling the particles that arrive at ground level or observing the fluorescence light generated during the passage of showers through the atmosphere -
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Presented by Jan EBR
on
2 Jun 2014
at
12:00
The investigation of the baryon states is important to understand the underling nature/symmetries of hadronic matter. Historically, the first nucleon excitation experiments have been done using charged pion and kaon secondary beams. Later the antiproton-proton scattering have also been involved. However, since the beginning of the 90's meson photoproduction reactions have been considered as a powe
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Presented by Irakli KESHELASHVILI
on
29 May 2014
at
12:00
Meson photoproduction has developed into a powerful tool to study the nucleons excitation spectrum and test effective quark models which operate in the non-perturbative regime of QCD. An insight into the $J^P$ configurations and isospin decompositions of the contributing resonances is gained by measuring a minimal set of polarization observables on both the proton and the neutron. Single $\pi^0$ a
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Presented by Thomas STRUB
on
30 May 2014
at
17:10
Pseudoscalar Transition Form Factors are analyzed in the space-like region at the low- and intermediate-energy regions with rational approximants in a model-independent way. Low-energy parameters are, then, extracted from a fit to such data. The feasibility of the form factors to determine the $\eta$ and $\eta'$ mixing is analyzed as well as their implications into the light-by-light contribution
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Presented by Pablo SANCHEZ PUERTAS
on
2 Jun 2014
at
15:00
The discrepancy between the proton charge radius extracted from the muonic hydrogen Lamb shift measurement and the best present value obtained from the elastic scattering experiments, remains unexplained and represents a burning problem of today's nuclear physics. After more than 50 years of research the radius of a basic constituent of matter is still not understood.
This discrepancy created a g
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Presented by Miha MIHOVILOVIC
on
30 May 2014
at
11:30
Mesons with open charm or bottom, such as $D$ or $B$ mesons, represent the "hydrogen problem" of QCD. QCD sum rules provide a tool to get access to the $\bar{Q}q$ and $\bar{q}Q$ bound states, where $q = u, d$ and $Q = c, b$. Medium modifications of such states are of particular interest since they offer an opportunity to study the change of the complex QCD ground state. Within QCD sum rules, there
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Presented by Thomas BUCHHEIM
on
29 May 2014
at
17:30
Recent results on flavor physics are presented, using data from the ATLAS detector. The $\Upsilon(nS)$ and charmonium inclusive production cross-sections are discussed. $J/\Psi production associated with a $W$ vector boson is presented. An inclusive analysis of the $B(u)$ meson production is shown. Results on the production of heavy quarkonia are complemented by the measurement of inclusive phi m
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Presented by Rui WANG
on
3 Jun 2014
at
10:30
Charmed baryons are expected to exhibit a rich spectrum of states. However, only a few of these states have been confirmed and there must be many more excited states need to be found. Being one of them, the charmed baryon $\Lambda_c(2880)^+$ was observed by CLEO collaboration, BaBar collaboration and Belle collaboration, respectively. Now, more studies should still be required to enrich our unders
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Presented by Xiao-Hua YUAN
on
31 May 2014
at
15:00
We have been studying hadron physics by using a linearly polarized photon beam with energies up to 3 GeV at the Laser Electron Photon beamline at SPring-8 (LEPS). The photon beam is produced by the backward Compton scattering of laser photons off the 8-GeV electrons stored in the synchrotron radiation ring. In this talk, the recent results from the LEPS experiment are reported. We constructed a
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Presented by Tomoaki HOTTA
on
3 Jun 2014
at
13:00
Recent results from the Belle experiment will be presented, using the full data sample of Belle, corresponding to 772 million $B\bar{B}$ pairs. Special emphasis is given to precise measurements on $CP$ violation and tests of $CPT$ invariance. The presentation will also include new data on $T$ violation and complementary measurements from other world data.
Presented by Christian KIESLING
on
2 Jun 2014
at
12:30
The main part of this contribution is devoted to looking at the NA61/SHINE experiment [1] through the prism of the needs of neutrino oscillation experiments. An overview is shown of the results on hadron production measurements from $p+C$ interactions at 31 GeV/c registered during 2007. In addition, the new preliminary results from 2009 data are presented. These results are crucial for the precise
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Presented by Tomasz PALCZEWSKI
on
29 May 2014
at
16:50
The LHCb experiment has collected more than 3/fb of integrated luminosity in 2011 and 2012 and is producing a large amount of excellent results in beauty and charmed meson physics. An overview of the most recent results on rare B decays, CP violation, and charm physics will be given along with an outlook to the physics perspectives and to the LHCb upgrade.
Presented by Agnieszka OBŁĄKOWSKA-MUCHA
on
31 May 2014
at
15:00
Explaining the production dynamics of conventional quarkonium has been a challenge for nearly 20 years. The state-of-the-art theoretical framework, Non-Relativistic QCD (NRQCD), nowadays explains relatively well the observed production cross-sections, but it also predicts transverse polarization of the $q\bar{q}$ states at high tranverse momentum, which is not observed. This talk presents the CMS
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Presented by Alessando DEGANO
on
30 May 2014
at
16:50
The SAID approach to partial-wave analysis of nucleon-nucleon scattering data is reviewed. This has been applied to recent COSY $np$ scattering data. The appearance of poles (dibaryons) is discussed in light of these new fits.
Presented by Ron WORKMAN
on
30 May 2014
at
15:20
Present low energy experiments do not exclude the existence of a new light ($M<1$ GeV) particle with a small coupling to leptons. It can manifest in the decays of mesons with electron-positron pair(s) in the final state. We present here some results from the search for the very rare $\eta\rightarrow e^+e^-$ decay obtained using the WASA detector at COSY as well as a feasibility study for $\eta\rig
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Presented by Joanna STEPANIAK
on
2 Jun 2014
at
17:50
The attempts to detect exotic states in nucleon-antinucleon system have a long unsuccessful history. However, several recently performed experiments allow to isolate specific partial waves and see certain structures. These experiments include anti-protonic atoms, $J/\psi$ decays and nuclear absorption of antiprotons. One has a consistent evidence for a weakly bound and fairly broad
... More
Presented by Sławomir WYCECH
on
2 Jun 2014
at
18:10
Over the last decade, kaonic nuclear states have been studied extensively. In particular, the simplest state, $K^-pp$, is widely discussed in terms of its binding energy and width, since such simplest state is quite sensitive to the $\bar{K}N$ interaction. There are various theoretical predictions of the $K^-pp$ state at present, thus it is quite important to compare the theoretical calculations w
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Presented by Yuta SADA
on
2 Jun 2014
at
15:40
In 1986 Haider and Liu postulated a new kind of exotic nuclear matter - $\eta$-mesic nuclei in which the $\eta$ meson is bound in a nucleus by means of the strong interaction [1]. However, till now there is no clear experimental evidence confirmed empirically its existence. In November 2010, the search for the $^4\mathrm{He}$-$\eta$ bound state was performed with high statistics and high acceptanc
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Presented by Magdalena SKURZOK, Paweł MOSKAL
on
2 Jun 2014
at
15:00
The existence of a photon-like massive particle, the $\gamma '$ or dark photon, is postulated in several extensions of the Standard Model. These models are often advocated to explain some recent puzzling astrophysical observations, as well as to solve the sofar unexplained deviation between the measured and calculated values of the muon anomaly. The dark photon, unlike conventional photon, would
... More
Presented by Małgorzata GUMBERIDZE
on
2 Jun 2014
at
16:50
The recent precise determination of the $\sigma$ meson parameters ($f_0(500)$ meson) was done in analysis of new dispersion relations with imposed crossing symmetry condition [1,2]. Although results of this analysis are widely accepted, one can still find studies which use previous, significantly different values of the mass and the width of that resonance. Although results of that dispersive anal
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Presented by Robert KAMIŃSKI
on
31 May 2014
at
15:00
We discuss production of charmed mesons in proton-proton collisions at the LHC. The cross section for inclusive production of $c \bar c$ pairs is calculated in the framework of the $k_{\perp}$-factorization approach, i.e. effectively includes next-to-leading order corrections. Taking wide range of $x$ values necessary for the calculation we use and test several unintegrated gluon distributions fro
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Presented by Rafał MACIUŁA
on
30 May 2014
at
09:00
HADES is a versatile magnetic spectrometer installed at GSI Darmstadt at SIS18 [1]. Thanks to its high acceptance, powerful particle ($p/K/\pi/e$) identification and very good mass resolution ($2-3\%$ for dielectrons in the light vector meson mass range) it allows to study both hadron and rare dilepton production in $N+N$, $p+A$, $A+A$ collisions at a few AGeV beam energy range. In collisions $p+
... More
Presented by Witold PRZYGODA
on
30 May 2014
at
15:40
We present the current status of the analysis of about 1.7 billion $K_S$ $K_L$ pair events collected at DAFNE with the KLOE detector to determine the branching ratio of $K_S \rightarrow \pi e \nu$ decay and the lepton charge asymmetry. This sample is ~4 times larger in statistics than the one used in a previous KLOE analysis, allowing us to improve the accuracy of the measurement and of the relate
... More
Presented by Daria KAMIŃSKA
on
31 May 2014
at
15:00
Strange mesons are the rare probes of the nucleus-nucleus collisions investigated by the FOPI collaboration at the beam kinetic energy range of 1-2A GeV. This energy falls below ($K^-$, $\phi$(1020) ) or near ($K^+$, $K^0$) thresholds in the free nucleon-nucleon collision, therefore a considerable contribution to the production of these particles is expected to proceed via the secondary channels,
... More
Presented by Krzysztof PIASECKI
on
2 Jun 2014
at
10:30
Investigation of three-nucleon system provides basis for understanding details of interaction between nucleons, going also beyond simple pairwise forces. Modern realistic nucleon-nucleon (NN) interaction models describe well systems composed of the two nucleons. They are able to predict observables of the deuteron-proton breakup reaction only if combined with additional component of the dynamics -
... More
Presented by Wiktor PAROL
on
31 May 2014
at
15:00
Pellets are microscopic spheres of frozen hydrogen (approx. 25 micrometers in diameter), used as the target in hadron physics experiments such as WASA (Forschungszentrum Juelich, Germany) and the future PANDA experiment (GSI, Darmstadt, Germany). Because the space between the pellet generator and the interaction region is occupied by the particle detector system, pellets are produced approx. 2-3 m
... More
Presented by Andrzej PYSZNIAK
on
31 May 2014
at
15:00
The dynamics of $\eta$ meson production and the interaction of $\eta$ mesons with nucleons can be studied using the $\vec{p}p\to pp\eta$ reaction via measurements of the analyzing power $A_{y}$. Previous experiments measuring $A_{y}$ suffer from low statistics [1,2,3] and large uncertainities, therefore further studies are desirable. To this end, we have performed a measurement of the $\vec{p}p\to
... More
Presented by Iryna OZERIANSKA
on
2 Jun 2014
at
15:20
The large amount of Heavy Flavor data collected by the ATLAS experiment is potentially sensitive to New Physics, which could be evident in processes that are naturally suppressed in the Standard Model. The most recent results on the search for the rare decay B$_{s}$ (B$_{0}$) $\to$ $\mu^{+}\mu^{-}$ are presented. Recent results are also presented on the angular distribution parameters AFB and FL d
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Presented by Jaroslav GUENTHER
on
30 May 2014
at
18:10
The analysis of the process $e^+e^- \to 2(\pi^+\pi^-\pi^0)$ is described. The measurement of the process cross section in $E_{cm} = 1.5 - 2.0$ GeV energy range was based on 22 $pb^{-1}$ of integrated luminosity collected with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider. The preliminary study of the process dynamics will be also discussed in the talk.
Presented by Peter LUKIN
on
31 May 2014
at
15:00
Since December 2010 the CMD-3 detector has taken data at the electron-positron collider VEPP-2000 at Novosibirsk. The collected data sample corresponds about 60 inverse picobarn of the integrated luminosity in the c.m. energy range from 0.32 up to 2 GeV. The preliminary results for the processes $e^+e^- \to K^+K^-\pi^+\pi^-$ and $e^+e^-\to K^+K^-\eta$ are presented. The cross sections of these pro
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Presented by Dmitry SHEMYAKIN
on
2 Jun 2014
at
16:50
Isospin symmetry, to a good approximation, is preserved by the strong interaction due to the small mass difference between up and down quarks with respect to the mass of hadrons. Therefore, isospin-breaking decays are believed to be sensitive probes that can be used to access, for example, the up- and down-quark mass differences. Moreover, isospin breaking effects are considered as a signature for
... More
Presented by Olga BONDARENKO
on
29 May 2014
at
17:30
Spectroscopy of deeply-bound pionic atoms using the (d,$^3$He) reaction has been shown to be a powerful tool to study the pion in-medium modification. The 1s binding energies of medium-heavy pionic atoms can be related to the "partial restoration" of chiral condensate with the Tomozawa-Weinberg and the Gell-Mann-Oakes-Renner relations, as was demonstrated in our previous experiment carried out at
... More
Presented by Ryugo HAYANO
on
3 Jun 2014
at
12:30
The neutral kaon doublet is one of the most intriguing systems in nature. Entangled pairs of neutral K mesons produced in $\phi$ decays offers a unique possibility to perform very precise tests of fundamental discrete symmetries in nature, as well as of basic principles of quantum mechanics. The most recent results will be reviewed and perspectives in the field will be discussed.
Presented by Antonio DI DOMENICO
on
2 Jun 2014
at
17:30
The anomalous magnetic moment of the muon $(g-2)_\mu$ is one of the most precisely measured quantities in particle physics (0.54~ppm). There is a long-standing discrepancy of 3-4 standard deviations between the direct measurement of $(g-2)_\mu$ and its theoretical evaluation. This theoretical prediction is subdivided into three contributions: QED, weak and hadronic.
The QED and weak parts can be
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Presented by Andreas HAFNER
on
29 May 2014
at
10:00
COMPASS is a multi-purpose fixed-target experiment at the CERN Super Proton Synchrotron aimed at studying the structure and spectrum of hadrons. One main goal is the search for new hadronic states, in particular hybrid mesons and glueballs. Its large acceptance, high resolution, and high-rate capability make the COMPASS experiment an excellent device to study the spectrum of light-quark mesons in
... More
Presented by Florian HAAS
on
29 May 2014
at
14:50
The chiral SU(3) Lagrangian extended to next-to-leading order (NLO) has been used to study the meson-baryon interaction in S-wave in the strangeness $S=-1$ sector. Consequently our model has 7 new parameters which have to do with NLO terms in the chiral Lagrangian, and which are of prime interest for us. A large set of experimental data available for different two-body channels has been used in th
... More
Presented by Albert FEIJOO ALIAU, Angels RAMOS
on
30 May 2014
at
15:40
The unexplained large discrepancy of the proton charge radius measurements with muonic hydrogen Lamb shift and determinations from elastic electron scattering and Lamb shift in regular hydrogen of seven standard deviations is known as the proton radius puzzle. Suggested solutions of the puzzle range from possible errors in the experiments through unexpectedly large hadronic physics effects to new
... More
Presented by Michael KOHL
on
31 May 2014
at
15:00
The $\rho$-(770) production density matrix is studied with the VES setup in $\pi^{-}N \to N'\pi^{-}\pi^{0}$ with statistics three orders of magnitude bigger than in previous studies. A significant background to the $\pi^{-}\pi^{0}$ sample is leakage from previously studied $\pi^{-}\pi^{0}\pi^{0}$ system. The estimation of the background contribution is implemented in the Partial Wave Analysis proc
... More
Presented by Mikhail MIKHASENKO
on
30 May 2014
at
16:00
The primary focus of the Qweak experiment at Jefferson Lab is to perform a precision measurement of the proton’s neutral weak charge. The Standard Model gives a firm prediction for the weak charge; any deviation from that can be interpreted as evidence for new physics beyond the Standard Model. The experiment measures the parity-violating asymmetry in the elastic scattering of 1.1 GeV longitudin
... More
Presented by Mark PITT
on
30 May 2014
at
12:00
In the analysis of data on decays of the $\Upsilon$-meson family - $\Upsilon(2S)\to\Upsilon(1S)\pi\pi$, $\Upsilon(3S)\to\Upsilon(1S)\pi\pi$ and $\Upsilon(3S)\to\Upsilon(2S)\pi\pi$ - the contribution of multi-channel $\pi\pi$ scattering in the final-state interactions is considered. The analysis, which is aimed at studying the scalar mesons, is performed jointly considering the isoscalar S-wave pro
... More
Presented by Yury SUROVTSEV
on
31 May 2014
at
15:00
The basic way to understanding the mechanism of reactions involving nucleons and nuclei is creating a model of nuclear forces which with a very good agreement describes the data from experiments. For systems of three nucleons one can do an exact calculations using one of three types of theory, which are used for comparisons with experimental data. The first theory (calculations of Witała group [1
... More
Presented by Izabela SKWIRA-CHALOT
on
31 May 2014
at
15:00
The theoretical description of meson photoproduction reactions off the proton at energies around 2 GeV requires the consideration of channels involving vector mesons and baryons together with a proper implementation of unitarization. A clear example is provided by the $\gamma p \to K^0 \Sigma^+$ reaction in the energy region around the $K^*\Lambda$ and $K^*\Sigma$ thresholds, where the CBELSA/TAPS
... More
Presented by Angels RAMOS
on
30 May 2014
at
16:50
The 12 GeV upgrade to the Continuous Electron Beam Accelerator Facility (CEBAF) will enable a new generation of experiments in hadronic nuclear physics at Jefferson Lab, seeking to address fundamental questions in QCD. For example, confirming the existence of exotic states, suggested by both quark models and lattice calculations, would allow gluonic degrees of freedom to be explored, and may help
... More
Presented by Stuart FEGAN
on
30 May 2014
at
16:00
In this work, the differential cross section of $\Lambda(1405)$ formation in $K^{-}p \to \Sigma^{+}(1660)$, $\Sigma^{+}(1660) \to \Lambda(1405) \pi^{+}$ and finally $\Lambda(1405) \to (\Sigma \pi)^{0}$ have been calculated theoretically. Calculation and investigation of the invariant mass of this reaction give an opportunity to find out the structure of this resonance state. We use Hemingway expe
... More
Presented by Maryam HASSANVAND
on
31 May 2014
at
15:00
Positron Emission Tomography is a very successful medical imaging system. However, the current PET modalities do not allow for simultaneous whole body imaging because the number of crystals, photomultipliers and electronics modules increase linearly with increasing longitudinal field of view (FOV). Therefore, building a PET detector for covering the whole human body is economically unrealistic whe
... More
Presented by Neha GUPTA, Natalia ZOŃ
on
31 May 2014
at
15:00
Recent developments and phenomena related to low-energy antikaon interactions with baryonic systems are summarized. Expectations for kaonic deuterium and for the $\bar{K}$-deuteron scattering length are outlined in view of planned experiments. Updated information is provided concerning the structure of the $\Lambda(1405)$. The quest for kaon condensation and the role of strangeness in dense baryon
... More
Presented by Wolfram WEISE
on
31 May 2014
at
11:30
In this work we study the semileptonic decays of $\bar B_s$ mesons in the context of nonrelativistic constituent quark models. We estimate the uncertainties of our calculation using different interquark potentials to obtain the meson wave functions. We check the results from our model against the predictions of Heavy Quark Symmetry, in the limit of infinite heavy quark mass. We also study the nonl
... More
Presented by Conrado ALBERTUS-TORRES
on
2 Jun 2014
at
15:20
