Charmonium production in antiproton-nucleus reactions at low energies

Abstract

The J/Ψ(1S) and Ψ'(2S) production near threshold in antiproton-nucleus reactions is calculated on the basis of the Glauber model. The model takes into account the antiproton (pre)absorption, proton Fermi motion, and charmonium formation length. We confirm earlier prediction that the charmonium production in $\bar{p}A$ collisions at $p_{lab}=3-10$ GeV/c is not influenced by formation length effects and is very well suited to determine the genuine charmonium-nucleon dissociation cross sections. The comparison is performed with the J/Ψphotoproduction at high energies, where formation length effects play a very important role. However, we demonstrate that the detailed structure of the proton and neutron density profiles has to be taken into account, if one wants to extract information on the J/ΨN dissociation cross section from J/Ψtransparency ratios. These studies are relevant for the upcoming PANDA experiment at FAIR.

23 pages, 9 figures, new Figs. 5 and 9, modified conclusions

References in corpus (5)

• Transport-theoretical Description of Nuclear Reactions
• Hard probes of short-range nucleon-nucleon correlations
• $J/\psi$ reaction mechanisms and suppression in the nuclear medium
• J/psi absorption by nucleons in the meson-exchange model
• Charmonium-Nucleon Dissociation Cross Sections in the Quark Model

Cited by in corpus (13)

• PANDA Phase One
• Sub-threshold $J/\psi$ and ${\rm Y}$ Production in $\gamma A$ Collisions
• The role of hidden-charm pentaquark resonance $P_c^{+}(4450)$ in $J/\psi$ photoproduction on nuclei near threshold
• Determination of the structure of the $X(3872)$ in $\bar{p}A$ collisions
• Color transparency in ${\pi }^{-}$-induced dilepton production on nuclei
• $\bar{D}D$ meson pair production in antiproton-nucleus collisions
• Near-threshold J/Psi production in proton-nucleus collisions
• Polarized ${\chi }_{c2}$-charmonium production in antiproton-nucleus interactions
• Probing the structure of $X(3872)$ in photoproduction
• An alternative way to decipher the nature of the doubly charmed tetraquark $T_{cc}(3875{)}^{+}$: its antiparticle $T_{\bar{c}\bar{c}}(3875{)}^{-}$ photoproduction off nuclei near threshold
• Rescattering effects in antiproton-induced exclusive $J/\psi$ and ${\psi }^{\prime }$ production on the deuteron
• Charmonium production in $\bar{p}$-induced reactions on nuclei
• Absorption of 1$P$-wave heavy charmonium ${\chi }_{c1}(1P)$ in nuclei