Charm Production in p̄A-Collisions at the Charmonium Threshhold
نویسنده
چکیده
Abstract. We discuss the production of charmonium states in antiproton-nucleus collisions at the ψ ′ threshold. It is explained that measurements in p̄A collisions will allow to get new information about the strengths of the inelastic J/ψN and ψ N interaction, on the production of Λc and D̄ in charmonium-nucleon interactions and for the first time about the nondiagonal transitions ψ N → J/ψN. The inelastic J/ψ-nucleon cross section is extracted from the comparison of hadron-nucleus collisions with hadron-nucleon collisions. Predictions for the ratio of J/ψ to ψ ′ yields in antiprotonnucleus scatterings close to the threshold of ψ ′ production for different nuclear targets are presented.
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