Charm Production in $\bar pA$-Collisions at the Charmonium Threshhold

Details Charm Production in $\bar pA$-Collisions at the Charmonium Threshhold Charm Production in $\bar pA$-Collisions at the Charmonium Threshhold

2005-07-26

arxiv.org/abs/nucl-th/0507059v1

Physics

Nuclear Physics

Nuclear Theory

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

Scientific paper

We discuss the production of charmonium states in antiproton-nucleus collisions at the $\psi'$ 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 $\psi'N$ interaction, on the production of $\Lambda_c$ and $\bar{D}$ in charmonium-nucleon interactions and for the first time about the nondiagonal transitions $\psi' N\to J/\psi N$. 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 $\psi'$ yields in antiproton-nucleus scatterings close to the threshold of $\psi'$ production for different nuclear targets are presented.

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