Anomalous mesonic interactions near a chiral phase transition

Journal Article · Mon Apr 01 04:00:00 EST 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.3084· OSTI ID:284733

Pisarski, R D ^[1]

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1. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)

Using constituent quarks coupled to a linear sigma model at nonzero temperature, I show that many anomalous mesonic amplitudes, such as {pi}{sup 0}{r_arrow}{gamma}{gamma}, vanish in a chirally symmetric phase. Processes which are allowed, such as {pi}{sup 0}{sigma}{r_arrow}{gamma}{gamma}, are computed to leading order in a loop expansion. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Brookhaven National Laboratory
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 284733
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 17 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
AMPLITUDES
ANOMALOUS PROPERTIES
CHIRAL SYMMETRY
GAMMA DECAY
INTERACTIONS
LAGRANGIAN FUNCTION
MESONS
PHASE TRANSFORMATIONS
PIONS NEUTRAL
QUARK MODEL
QUARKS
SIGMA MODEL