1. π0 DECAY AT CRITICAL TEMPERATURE
- Author
-
Pin-Zhen Bi and Johann Rafelski
- Subjects
Physics ,Quark ,Nuclear and High Energy Physics ,Meson ,Branching fraction ,High Energy Physics::Lattice ,General Physics and Astronomy ,Astronomy and Astrophysics ,Nuclear physics ,Particle decay ,Pion ,Critical point (thermodynamics) ,Quantum electrodynamics ,Mass spectrum ,High Energy Physics::Experiment ,Pion decay constant - Abstract
The influence of temperature on the pion decay constant and the two-photon decay of π0 is considered near the chiral symmetry restoration point. We analyze how the mass and decay width relate to each other and find that the π0 decay width in hot matter is suppressed, provided that the pion mass vanishes at the critical point; it diverges if pion mass remains finite while quark condensate is dissolved at T c .
- Published
- 1992