Hadronic interactions of the J/psi and Adler's theorem

Details Hadronic interactions of the J/psi and Adler's theorem Hadronic interactions of the J/psi and Adler's theorem

2004-08-03

arxiv.org/abs/hep-ph/0408048v1

Phys.Rev.C70:055203,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 4 figures

Scientific paper

10.1103/PhysRevC.70.055203

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. Moreover, we test the models against Adler's theorem, which requires, in the appropriate limit, the decoupling of pions from the theory for the normal parity sector. Using the newly proposed Lagrangian, which exhibits SU_L(N_f) x SU_R(N_f) 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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