Glueball contribution to K sub L r arrow 2. gamma. and its possible detection in D sub s decay

Journal Article · Mon Feb 26 04:00:00 EST 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.1003· OSTI ID:7188019

He, X; Pakvasa, S; Paschos, E A; Wu, Y L ^[1]

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1. School of Physics, University of Melbourne, Parkville, Victoria 3052, Australia (AU) Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822 (USA) Institut fuer Physik, Universitaet Dortmund, 4600 Dortmund 50, West Germany (DE) Institut fuer Physik, Universitaet Mainz, 6500 Mainz, West Germany (DE)

Considering the {iota}(1460) to be the physical glueball {ital G} and to mix with {eta}{prime}, we then find the mixing angle to be restricted to 0.15{gt}sin{theta}{sub 2}{gt}{minus}0.43 from the data of {pi}{sup 0},{eta},{eta}{prime}{r arrow}2{gamma} and the upper bound on {iota}(1460){r arrow}2{gamma}. The transition matrix element for {ital K}{sub {ital L}}{r arrow}G{sup 0} (bare glueball) is also computed (and found to be comparable to that for {ital K}{sub {ital L}}{r arrow}{pi}{sup 0}). These permit the glueball contribution to {ital K}{sub {ital L}}{r arrow}2{gamma} and {Delta}{ital m}{sub {ital K}{sub {ital L}}-{ital K}{sub {ital S}}} to be significant. Finally, for large mixing angles, the decay of {ital D}{sub {ital s}}{sup +} into a glueball is sizable, e.g., {ital B}({ital D}{sub {ital s}}{sup +}{r arrow}{iota}(1460){pi}{sup +}) can be as large as 1%, and searches for glueballs in these decays are highly desirable.

• DOE Contract Number: AC02-76ER13065; AM03-76SF00235
• OSTI ID: 7188019
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 64:9; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645204 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESONS
D S MESONS
DECAY
DIAGRAMS
ELEMENTARY PARTICLES
EQUATIONS
ETA-1440 MESONS
FEYNMAN DIAGRAM
FIELD THEORIES
GLUEBALLS
HADRONIC PARTICLE DECAY
HADRONS
KAONS
KAONS NEUTRAL
KAONS NEUTRAL SHORT-LIVED
KOBAYASHI-MASKAWA MATRIX
MATRICES
MATRIX ELEMENTS
MESONS
PARTICLE DECAY
PCAC THEORY
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RADIATIVE DECAY
STRANGE MESONS
STRANGE PARTICLES
SUM RULES
TRANSITION AMPLITUDES
UNIFIED-FIELD THEORIES