Theoretical limit on iota. -->. rho. gamma. and constraints on glueball--qq-bar-meson couplings with the pion and the isovector photon

Journal Article · Mon Oct 12 04:00:00 EDT 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.59.1641· OSTI ID:5946298

Slaughter, M D; Oneda, S

Within the formalism and theoretical framework of asymptotic SU/sub F/(4) symmetry plus the constraint algebras involving the generators of the underlying symmetries of QCD, we derive an important relation between meson isoscalar-isovector matrix elements of the electromagnetic current and corresponding matrix elements of the axial-vector charge A/sub ..pi../. A lower bound is calculated for the rate GAMMA(iota..-->..rho..gamma..) which indicates that GAMMA(iota..-->..rho..gamma..) is of the order of 1 MeV, with its exact value depending upon the rates GAMMA(iota..-->..delta..pi..) and GAMMA(delta..-->..eta..pi..). The estimate of the lower bound is independent of the specific quark and glue content of the iota.

• Research Organization: Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 5946298
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 59:15; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
ANGULAR MOMENTUM
AXIAL-VECTOR CURRENTS
BOSONS
BRANCHING RATIO
COUPLING CONSTANTS
CURRENTS
ELEMENTARY PARTICLES
FIELD THEORIES
GLUEBALLS
HADRONS
IOTA-1440 RESONANCES
LIE GROUPS
MASSLESS PARTICLES
MATRIX ELEMENTS
MESONS
PARITY
PARTICLE IDENTIFICATION
PARTICLE PROPERTIES
PCAC THEORY
PHOTONS
PIONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
RADIATIVE DECAY
RHO-765 RESONANCES
SPIN
SU GROUPS
SU-4 GROUPS
SYMMETRY GROUPS