160 articles – 2210 Notices  [english version]
 HAL : in2p3-00139046, version 1
 arXiv : nucl-th/0703040
 Physical Review C 75 (2007) 048201
 In-medium omega meson mass and quark condensate in a Nambu Jona-Lasinio model constrained by recent experimental data
 (2007)
 We have determined the relation between the in-medium $\omega$ meson mass and quark condensate in the framework of a Nambu Jona-Lasinio model constrained by some recent experimental data on the meson properties in nuclei. In addition to the usual four-quark interactions, we have included eight-quark terms in the Lagrangian. The parameters of this model have been determined using the meson properties in the vacuum as well as in the medium. More particularly, we have constrained both the in-medium pion decay constant to the value measured in experiments on deeply bound pionic atoms and the in-medium $\omega$ meson mass to the experimental value obtained either by the TAPS collaboration or by the E325 experiment at KEK. Our results are compared to several scaling laws and in particular to that of Brown and Rho.
 Thème(s) : Physique/Physique Nucléaire Théorique
 Lien vers le texte intégral : http://fr.arXiv.org/abs/nucl-th/0703040
 in2p3-00139046, version 1 http://hal.in2p3.fr/in2p3-00139046 oai:hal.in2p3.fr:in2p3-00139046 Contributeur : Pascale Chambon <> Soumis le : Jeudi 29 Mars 2007, 09:18:04 Dernière modification le : Jeudi 3 Juillet 2008, 12:17:55