THE EXISTENCE OF LOW-LYING MESONS AS A CONSEQUENCE OF CONFINEMENT

Citation
An. Ivanov et al., THE EXISTENCE OF LOW-LYING MESONS AS A CONSEQUENCE OF CONFINEMENT, Physics letters. Section B, 336(3-4), 1994, pp. 555-559
Citations number
20
Categorie Soggetti
Physics
Journal title
ISSN journal
03702693
Volume
336
Issue
3-4
Year of publication
1994
Pages
555 - 559
Database
ISI
SICI code
0370-2693(1994)336:3-4<555:TEOLMA>2.0.ZU;2-1
Abstract
We use the Bethe-Salpeter equation for the investigation of the mass s pectra of four nonets of low-lying mesons (pseudoscalar, scalar, vecto r and axial-vector) within QCD with a linearly rising potential. In le ading order in the large-N expansion and in the chiral limit the mass spectra are found in agreement with those predicted by the extended Na mbu-Jona-Lasinio model. We show that due to the confinement potential the nonets of vector and axial-vector mesons are stable under decays i nto quark-antiquark pairs.