{eta},{eta}{sup '}{yields}{pi}{sup +}{pi}{sup -}l{sup +}l{sup -} in a chiral unitary approach

The anomalous decays of {eta} and {eta}{sup '} into {pi}{sup +}{pi}{sup -}l{sup +}l{sup -} (with l = e,{mu}) are investigated within a chiral unitary approach which combines the chiral effective Lagrangian with a non-perturbative treatment of final-state interactions. Predictions for branching...

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Bibliographic Details
Published in:AIP conference proceedings 2007-11, Vol.950 (1)
Main Authors: Nissler, R., Borasoy, B.
Format: Article
Language:English
Subjects:
BRANCHING RATIO
CHIRAL SYMMETRY
CHIRALITY
ELECTRONS
ETA MESONS
ETA PRIME-958 MESONS
FINAL-STATE INTERACTIONS
LAGRANGIAN FUNCTION
MESON-MESON INTERACTIONS
MUONS
PARTICLE DECAY
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PIONS MINUS
PIONS PLUS
QUANTUM CHROMODYNAMICS
QUARKS
REST MASS
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Summary:The anomalous decays of {eta} and {eta}{sup '} into {pi}{sup +}{pi}{sup -}l{sup +}l{sup -} (with l = e,{mu}) are investigated within a chiral unitary approach which combines the chiral effective Lagrangian with a non-perturbative treatment of final-state interactions. Predictions for branching ratios and decay widths are given.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.2819031