Eur. Phys. J. C (2007) 49: 743-754
https://doi.org/10.1140/epjc/s10052-006-0142-1

Regular Article - Theoretical Physics

Chromomagnetism, flavour symmetry breaking and S-wave tetraquarks

¹ Dipartimento di Scienze Fisiche and INFN, Sezione di Napoli, Università di Napoli Federico II, Complesso Universitario di Monte Sant’Angelo, via Cintia, 80126, Napoli, Italy
² Department of Physics, University of Oslo, Box 1048, 0316, Oslo, Norway
³ Laboratoire de Physique Subatomique et Cosmologie, Université Joseph Fourier–IN2P3-CNRS 53, avenue des Martyrs, 38026, Grenoble cedex, France
⁴ Laboratoire d’Annecy-le-Vieux de Physique Théorique (LAPTH) 9, chemin de Bellevue, B.P. 110, 74941, Annecy-le-Vieux Cedex, France

^* e-mail: jean-marc.richard@lpsc.in2p3.fr

Received: 1 August 2006
Published online: 18 November 2006

Abstract

The chromomagnetic interaction, with full account for flavour-symmetry breaking, is applied to S-wave configurations containing two quarks and two antiquarks. Phenomenological implications are discussed for light, charmed, charmed and strange, hidden-charm and double-charm mesons, and extended to their analogues with beauty.