The reaction ppbar -> Lambda_c-Lambda_cbar close to threshold

Abstract

Predictions for the charm-production reaction antiproton-proton -> antiLambda_c-Lambda_c for energies near the threshold are presented. The calculations are performed in a meson-exchange framework in close analogy to our earlier study on antiproton-proton -> antiLambda-Lambda by connecting the two processes via SU(4) symmetry. The obtained antiLambda_c-Lambda_c production cross sections are in the order of 1 to 7 \mub, i.e. a factor of around 10 smaller than the corresponding cross sections for antiLambda-Lambda. However, they are 100 to 1000 times larger than predictions of other model calculations in the literature.

12 pages, 4 figures

References in corpus (6)

• Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons
• Dbar-N interaction from meson-exchange and quark-gluon dynamics
• Charmed meson rescattering in the reaction pbar d to D Dbar N
• Exclusive charm production in pbar p collisions at s^1/2 <15 GeV
• Proton-Antiproton Annihilation into a Lambda_c-Antilambda_c Pair
• Charmonium-Nucleon Dissociation Cross Sections in the Quark Model

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