TETRAQUARKS WITH COLOR-BLIND FORCES IN CHIRAL QUARK MODELS

Authors
PEPIN S STANCU F GENOVESE M RICHARD JM
Citation
S. Pepin et al., TETRAQUARKS WITH COLOR-BLIND FORCES IN CHIRAL QUARK MODELS, Physics letters. Section B, 393(1-2), 1997, pp. 119-123
Citations number
28
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
393
Issue
1-2
Year of publication
1997
Pages
119 - 123
Database
ISI
SICI code
0370-2693(1997)393:1-2<119:TWCFIC>2.0.ZU;2-A
Abstract
We discuss the stability of multiquark systems within the recent model of Glozman et al. where the chromomagnetic hyperfine interaction is r eplaced by pseudoscalar meson exchange contributions. We find that suc h an interaction binds a heavy tetraquark systems QQ<(qq)over bar> (Q = c, b and q = u, d) by 0.2-0.4 GeV. This is at variance with results of previous models where cc<(qq)over bar> is unstable.