Isospin-violating radiative decays of the. eta. meson

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.44.295· OSTI ID:5592996

Fajfer, S; Suruliz, K ^[1]; Oakes, R J ^[2]

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1. Institut za fiziku PMF, University of Sarajevo, Sarajevo, Yugoslavia (YU)
2. Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208 (USA)

The branching ratio for {eta}{r arrow}{pi}{sup +}{pi}{sup {minus}}{pi}{sup 0}{gamma} is calculated using an effective low-energy Lagrangian. The bremsstrahlung part of the amplitude as well as the direct emission term, which is significant, are taken into account. The predicted value for the {eta}{r arrow}{pi}{sup +}{pi}{sup {minus}}{pi}{sup 0}{gamma} decay width is below present experimental limit. A comment on the possible {eta}{prime}{r arrow}{pi}{sup +}{pi}{sup {minus}}{pi}{sup 0}{gamma} decay is made.

• OSTI ID: 5592996
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 44:1; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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645300 -- High Energy Physics-- Particle Invariance Principles & Symmetries
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
BREMSSTRAHLUNG
CHIRAL SYMMETRY
DALITZ PLOT
DECAY
DIAGRAMS
DISTRIBUTION
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ETA MESONS
ETA PRIME-958 MESONS
FIELD THEORIES
FUNCTIONS
GAUGE INVARIANCE
HADRONS
INTERACTIONS
INVARIANCE PRINCIPLES
ISOSPIN
LAGRANGIAN FUNCTION
LIE GROUPS
MESONS
PARTICLE DECAY
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RADIATIONS
RADIATIVE DECAY
SCATTERPLOTS
SU GROUPS
SU-3 GROUPS
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS