Chiral Suppression of Scalar-Glueball Decay

Journal Article · Fri Oct 21 04:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.172001· OSTI ID:20699465

Chanowitz, Michael S ^[1]

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1. Theoretical Physics Group, Ernest Orlando Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 (United States)

Since glueballs are SU(3){sub Flavor} singlets, they should couple equally to u, d, and s quarks, so that equal coupling strengths to {pi}{sup +}{pi}{sup -} and K{sup +}K{sup -} are expected. However, we show that chiral symmetry implies the scalar-glueball amplitude for G{sub 0}{yields}qq is proportional to the quark mass, so that mixing with ss mesons is enhanced and decays to K{sup +}K{sup -} are favored over {pi}{sup +}{pi}{sup -}. Together with evidence from lattice calculations and experiment, this supports the hypothesis that f{sub 0}(1710) is the ground state scalar glueball.

• OSTI ID: 20699465
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 17 Vol. 95; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
CHIRAL SYMMETRY
CHIRALITY
COUPLING
D QUARKS
FLAVOR MODEL
GLUEBALLS
GROUND STATES
KAONS MINUS
KAONS PLUS
MASS
PARTICLE DECAY
PIONS MINUS
PIONS PLUS
QUANTUM CHROMODYNAMICS
S QUARKS
SU-3 GROUPS
U QUARKS