Eur. Phys. J. C (2006) 48: 545-551
https://doi.org/10.1140/epjc/s10052-006-0075-8

Regular Article - Theoretical Physics

J/ψ strong couplings to vector mesons

¹ Dipartimento Interateneo di Fisica, Università di Bari and INFN Bari, via Amendola 173, 70126, Bari, Italy
² Sezione di Pavia and Dipartimento di Fisica Nucleare e Teorica, INFN, via A. Bassi 6, 27100, Pavia, Italy
³ INFN Sezione di Roma, Roma, Italy

^* e-mail: antonio.polosa@cern.ch

Received: 10 May 2006
Published online: 24 October 2006

Abstract

We present a study of the cross sections J/ψX→D^(*)D̄^(*) (X=ρ, Φ) based on the calculation of the effective tri- and four-linear couplings J/ψ X D^(*) D̄^(*) within a constituent quark model. In particular, the method for the calculation of the four-linear couplings is illustrated. The results obtained have been used in a recent analysis of J/ψ absorption by the hot hadron gas formed heavy-ion collisions at SPS energies.