Strong Couplings of Three Mesons with Charm(ing) Involvement
1 Institute for High Energy Physics, Austrian Academy of Sciences, Nikolsdorfergasse 18 A-1050 Vienna, Austria
2 D. V. Skobeltsyn Institute of Nuclear Physics, M. V. Lomonosov Moscow State University, 119991, Moscow, Russia
3 Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
4 IPN, CNRS/IN2P3, Université, Paris-Sud 11, F-91406 Orsay, France
5 INFN, Sezione di Roma Tre, Via della Vasca Navale 84, I-00146 Roma, Italy
Published online: 22 March 2017
We determine the strong couplings of three mesons that involve, at least, one ηc or J/ψ meson, within the framework of a constituent-quark model by means of relativistic dispersion formulations. For strong couplings of J/ψ mesons to two charmed mesons, our approach leads to predictions roughly twice as large as those arising from QCD sum rules.
© The Authors, published by EDP Sciences, 2017
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