Contribution parallel talk
Hidden charm meson production in antiproton-induced reactions on nuclei
Speakers
- Alexei LARIONOV
Primary authors
- Alexei LARIONOV (FIAS Frankfurt and Kurchatov Institute)
Co-authors
- Marcus BLEICHER (FIAS Frankfurt and Goethe University Frankfurt)
- Albrecht GILLITZER (Forschungszentrum Jülich)
- Mark STRIKMAN (Pennsylvania State University)
Abstract content
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 determine the genuine charmonium-nucleon dissociation cross section. This is contrasted to the J/\psi photoproduction at high energies (E_\gamma=20 and 120 GeV), where charmonium formation length is large which blurs the sensitivity of the transparency ratio to the charmonium-nucleon dissociation cross section. Furthermore, the polarization effects in the production of \chi_{c2}(1P) states are evaluated within the generalized eikonal approximation [3]. Finally, the new opportunities for the studies of the X,Y,Z noncharmonium candidates at PANDA experiment are discussed.
[1] G.R. Farrar, L.L. Frankfurt, M.I. Strikman, H. Liu, Nucl. Phys. B 345, 125 (1990) [2] A.B. Larionov, M. Bleicher, A. Gillitzer, M. Strikman, Phys. Rev. C 87, 054608 (2013) [3] A.B. Larionov, M. Strikman, M. Bleicher, Phys. Rev. C 89, 014621 (2014)