We present an evaluation of the strong couplings JD^(*)D^(*) and JD^(*)D^(*)pi by an effective field theory of quarks and mesons. These couplings are necessary to calculate pi+J/psi --> D^(*)+barD^(*) cross sections, an important background to the J/psi suppression signal in the quark-gluon plasma. We write down the general effective lagrangian and compute the relevant couplings in the soft pion limit and beyond.
@article{arxiv.hep-ph/0302273,
title = {J/psi couplings to charmed resonances and to pi},
author = {A. Deandrea and G. Nardulli and A. D. Polosa},
journal= {arXiv preprint arXiv:hep-ph/0302273},
year = {2009}
}
Comments
11 pages, 4 figures, 2 reference added and minor comments, style changed to RevTeX