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arXiv · hep-ph/9408378

Nucleon-Antinucleon Annihilation at the Open Charm Threshold

B. Kerbikov·D. Kharzeev
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Abstract

We discuss the $p\bar{p}$ annihilation into a pair of charmed $D$ mesons not far from the threshold of the reaction. An interesting interference pattern in the differential cross section is predicted to arise from the existence of both $t$-channel charmed-baryon exchange and $s$-channel $Ψ^{''}$ charmonium resonance amplitudes. We argue that the experimental study of this process would provide new and valuable information about the unknown $p\bar{p}Ψ^{''}$ and $Λ_c N D$ couplings. These are important to know to solve the long-standing puzzle of the heavy flavour contents of baryons and to test the semi-local duality.

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B. Kerbikov, D. Kharzeev. 1994-08-26. Nucleon-Antinucleon Annihilation at the Open Charm Threshold. https://doi.org/10.1103/physrevd.51.6103

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