How much charm can PANDA produce?

Abstract

We consider the production of charmed baryons and mesons in the proton-antiproton binary reactions at the energies of the future $\bar{P}$ANDA experiment. To describe these processes in terms of hadronic interaction models, one needs strong couplings of the initial nucleons with the intermediate and final charmed hadrons. Similar couplings enter the models of binary reactions with strange hadrons. For both charmed and strange hadrons we employ the strong couplings and their ratios calculated from QCD light-cone sum rules. In this method finite masses of $c$ and $s$ quarks are taken into account. Employing the Kaidalov's quark-gluon string model with Regge poles and adjusting the normalization of the amplitudes in this model to the calculated strong couplings, we estimate the production cross section of charmed hadrons. For $p\bar{p}\to {\Lambda }_c{\bar{\Lambda }}_c$ it can reach several tens of $nb$ at $p_{lab}=15GeV$, whereas the cross sections of ${\Sigma }_c$ and $D$ pair production are predicted to be smaller.

22 pages, 6 figures, matches published version

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• Nucleon Form Factors in QCD
• Form Factors and Strong Couplings of Heavy Baryons from QCD Light-Cone Sum Rules
• Future Prospects for Hadron Physics at PANDA
• Distribution amplitudes of $\Sigma$ and $\Lambda$ and their electromagnetic form factors
• Exclusive charm production in pbar p collisions at s^1/2 <15 GeV
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• Proton-Antiproton Annihilation into a Lambda_c-Antilambda_c Pair
• Charm production in antiproton-proton annihilation
• Parton Model Calculation of Inclusive Charm Production by a Low-energy Antiproton Beam
• Slope analysis for elastic proton-proton and proton-antiproton scattering

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