Charm Production in $\bar{p}A$-Collisions at the Charmonium Threshhold

Abstract

We discuss the production of charmonium states in antiproton-nucleus collisions at the ${\psi }^{\prime }$ threshold. It is explained that measurements in $\bar{p}A$ collisions will allow to get new information about the strengths of the inelastic $J/\psi N$ and ${\psi }^{\prime }N$ interaction, on the production of ${\Lambda }_c$ and $\bar{D}$ in charmonium-nucleon interactions and for the first time about the nondiagonal transitions ${\psi }^{\prime }N\to J/\psi N$. The inelastic $J/\psi$-nucleon cross section is extracted from the comparison of hadron-nucleus collisions with hadron-nucleon collisions. Predictions for the ratio of $J/\psi$ to ${\psi }^{\prime }$ yields in antiproton-nucleus scatterings close to the threshold of ${\psi }^{\prime }$ production for different nuclear targets are presented.

Talk given at International Conference on Low Energy Antiproton Physics (LEAP'05), Bonn, Juelich, Germany, 16-22 May 2005

References in corpus (5)

• Modelling J/psi production and absorption in a microscopic nonequilibrium approach
• J/Ψproduction, $\chi$ polarization and Color Fluctuations
• Charmonium chemistry in A+A collisions at relativistic energies
• Charm production in antiproton-nucleus collisions at the $J/\psi$ and the ${\psi }^{\prime }$ thresholds
• Color Screening and the Suppression of the Charmonium State Yield in Nuclear Reactions