The omega meson at high temperatures

Abstract

The decays of the omega meson in a heat bath of thermally excited pions is studied within the framework of real-time thermal field theory using an appropriate effective Lagrangian. We show that the omega meson spectrum broadens considerably at temperatures T > 100 MeV, primarily because of omega pi -> pi pi reactions in the thermal environment.

7 pages, 2 figures; reference and paragraph added; version to appear in Phys. Lett. B

References in corpus (4)

• Current correlation functions, QCD sum rules and vector mesons in baryonic matter
• Low-mass e+e- pair production in 158 A GeV Pb-Au collisions at the CERN SPS, its dependence on multiplicity and transverse momentum
• Unstable particles in matter at a finite temperature: the rho and omega mesons
• Thermal Dileptons from Quark and Hadron Phases of an Expanding Fireball

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