J/ψdissociation cross sections in a relativistic quark model

Details J/ψdissociation cross sections in a relativistic quark model J/ψdissociation cross sections in a relativistic quark model

2003-11-24

arxiv.org/abs/hep-ph/0311300v2

Phys.Rev.D70:014005,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 9 figures, typos corrected, this version will appear on Phys. Rev. D

Scientific paper

10.1103/PhysRevD.70.014005

We calculate the amplitudes and the cross sections of the charm dissociation processes J/\psi \pi => D \bar D, D* \bar D, D \bar D*, D* \bar D* within a relativistic constituent quark model. We consistently account for the contributions coming from both the box and triangle diagrams that contribute to the dissociation processes. The cross section is dominated by the D* \bar D and D* \bar D* channels. When summing up the four channels we find a maximum total cross section of about 2.3 mb at sqrt(s) \approx 4.1 GeV. We compare our results to the results of other model calculations.

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