Identification of. theta. ( f sub 2 (1720)) as a tensor glueball

Journal Article · Fri Dec 01 04:00:00 EST 1989 · Physical Review (Section) D: Particles and Fields; (USA)

DOI:https://doi.org/10.1103/PhysRevD.40.3648· OSTI ID:7163406

Liu, K F; Li, B A ^[1]; Ishikawa, K ^[2]

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1. Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506 (USA)
2. Department of Physics, Hokkaido University, Sapporo 060, (Japan)

By incorporating a soft form factor, we show that {theta}({ital f}{sub 2}(1720)) has flavor-independent decays to {ital K{bar K}}, {eta}{eta}, and {pi}{pi}. The same form factor is needed to understand the suppression of {theta} in {ital K}{sup {minus}}p{r arrow}{Lambda}K{sub S}{sup 0}K{sub S}{sup 0} as well as its emergence in the central productions of {pi}{ital p}{r arrow}{pi}({ital K}{sup +}K{sup {minus}})p and {ital pp}{r arrow}{ital p}({ital K}{sup +}K{sup {minus}})p. This flavor-symmetric feature of {theta} is further enhanced by comparing {ital f}{sub 2}{sup {prime}}(1525) and {theta} in {ital J}/{psi} decays to {gamma}{ital K{bar K}}, {omega}{ital K{bar K}}, and {phi}{ital K{bar K}}. The absence of {theta} in {gamma}{gamma}{r arrow}{ital K}{sub {ital S}}{sup 0}K{sub S}{sup 0} and {ital K}{sup {minus}}p{r arrow}{Lambda}K{sub S}{sup 0}K{sub S}{sup 0} leads us to conclude that the quark content in {theta} is very low. With {theta} shown to be a flavor singlet and void of quarks, we believe that {theta} could indeed be a tensor glueball, subject to the verification of the soft form factor.

• OSTI ID: 7163406
• Journal Information: Physical Review (Section) D: Particles and Fields; (USA), Journal Name: Physical Review (Section) D: Particles and Fields; (USA) Vol. 40:11; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BOUND STATE
BRANCHING RATIO
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
ETA MESONS
F2-1720 MESONS
FERMIONS
FIELD THEORIES
FLAVOR MODEL
FORM FACTORS
GLUEBALLS
HADRONS
KAONS
LIE GROUPS
MATHEMATICAL MODELS
MESONS
PARTICLE IDENTIFICATION
PARTICLE MODELS
PARTICLE PROPERTIES
PIONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARKS
STRANGE MESONS
STRANGE PARTICLES
SU GROUPS
SU-3 GROUPS
SYMMETRY
SYMMETRY GROUPS
TENSOR MESONS