Simple parametrizations of light meson properties in hot or dense matter

✍ Scribed by H.C.G. Caldas; D.H.T. Franco; A.L. Mota; F.A. Oliveira; M.C. Nemes

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 330 KB
• Volume: 617
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(96)00435-6

✦ Synopsis

Sophisticated calculations of the dynamics of relativistic heavy-ion collisions often need as input properties of light mesons in medium. In this context simple analytical expressions for these quantities which respect chiral symmetry and low-energy current algebra results are most desirable. In the present work we provide such simple expressions based on a bosonized version of the microscopic NJL model. We also study the pion lifetime in hot and dense matter showing ~-(,rr -~tz-+~ ) that the ratio ~(___,~_+~) changes by a factor about three and thus carries a clear signature of the chiral phase transition. @ 1997 Elsevier Science B.V.