https://doi.org/10.1051/epjconf/201713713010
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
a e-mail: Wolfgang.Lucha@oeaw.ac.at
b e-mail: dmitri_melikhov@gmx.de
c e-mail: sazdjian@ipno.in2p3.fr
d e-mail: simula@roma3.infn.it
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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
