Thermal QCD sum rules for sigma(600) meson
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, vol.35, no.12, 2008 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 35 Issue: 12
- Publication Date: 2008
- Doi Number: 10.1088/0954-3899/35/12/125002
- Journal Name: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Open Archive Collection: AVESIS Open Access Collection
- Middle East Technical University Affiliated: Yes
Abstract
In the present work, the temperature dependence of the scalar meson parameters is investigated in the framework of thermal QCD sum rules. We calculate the sigma-pole and the non-resonant two-pion continuum contributions to the spectral density. Taking into account additional operators appearing at finite temperature, the thermal QCD sum rules are derived. The temperature dependence of the shifts in the mass and leptonic decay constant of the scalar sigma(600) meson is calculated.