Anomalous mesonic interactions near a chiral phase transition

Abstract

Using constituent quarks coupled to a linear sigma model at nonzero temperature, I show that many anomalous mesonic amplitudes, such as ${\pi }^0\to \gamma \gamma$, vanish in a chirally symmetric phase. Processes which are allowed, such as ${\pi }^0\sigma \to \gamma \gamma$, are computed to leading order in a loop expansion.

4 pages, REVTeX, submitted to Phys. Rev. Lett

References in corpus (3)

• Static and Dynamic Critical Phenomena at a Second Order QCD Phase Transition
• QCD and the Chiral Critical Point
• Where does the Rho Go? Chirally Symmetric Vector Mesons in the Quark--Gluon Plasma.

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