Nucleon-Antinucleon Annihilation at the Open Charm Threshold

Details Nucleon-Antinucleon Annihilation at the Open Charm Threshold Nucleon-Antinucleon Annihilation at the Open Charm Threshold

1994-08-26

arxiv.org/abs/hep-ph/9408378v1

Phys.Rev. D51 (1995) 6103-6106

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 1 figure available upon request, LaTeX, CERN-TH.7350/94

Scientific paper

10.1103/PhysRevD.51.6103

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 $\Psi^{''}$ charmonium resonance amplitudes. We argue that the experimental study of this process would provide new and valuable information about the unknown $p\bar{p}\Psi^{''}$ and $\Lambda_c N D$ 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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