J/psi dissociation and Adler's theorem

Details J/psi dissociation and Adler's theorem J/psi dissociation and Adler's theorem

2005-09-05

arxiv.org/abs/hep-ph/0509038v1

Int.J.Mod.Phys.A20:6169-6177,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 3 figures. To appear in the proceedings of the 27th Annual Montreal-Rochester-Syracuse-Toronto (MRST) conference on H

Scientific paper

10.1142/S0217751X05029198

Effective Lagrangian models of charmonium have recently been used to estimate dissociation cross sections with light hadrons. Detailed study of the symmetry properties reveals possible shortcomings relative to chiral symmetry. We therefore propose a new Lagrangian and point out distinguishing features amongst the different approaches. Using the newly proposed Lagrangian, which exhibits SU_L(4) X SU_R(4) symmetry and complies with Adler's theorem, we find dissociation cross sections with pions that are reduced in an energy dependent way, with respect to cases where the theorem is not fulfilled.

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