2007/03/13 by R. Huguet, J. C. Caillon, J. Labarsouque
Physics and Astronomy · #Chiral perturbation theory #Constituent quark #High-Energy Particle Collisions Research #Meson #Nuclear physics #Omega #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Pion decay constant #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Quark model #Quarkonium #Rho meson #Scaling #nucl-th
paper · pdf · doi:10.1103/physrevc.75.048201
published as Phys.Rev.C75:048201,2007 · 6 pages, 2 figures, accepted in Physical Review C, Brief Reports
arxiv created 2007/03/13 · openalex publication_date 2007/04/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have determined the relation between the in-medium \ensuremathω 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 \ensuremathω meson mass to the experimental value obtained either by the TAPS collaboration or by the E325 experiment at KEK Proton Synchrotron. Our results are compared to several scaling laws and in particular to that of G. E. Brown and M. Rho [(Phys. Rep. 398, 301 (2004)].