Glueball decay in holographic QCD

Journal Article · Tue Apr 15 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.086001· OSTI ID:21250069

Hashimoto, Koji ^[1]; Tan, C -I ^[2]; Terashima, Seiji ^[3]

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1. Institute of Physics, the University of Tokyo, Komaba, Tokyo 153-8902 (Japan)
2. Department of Physics, Brown University, Providence, Rhode Island 02912 (United States)
3. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)

Using holographic QCD based on D4-branes and D8-anti-D8-branes, we have computed couplings of glueballs to light mesons. We describe glueball decay by explicitly calculating its decay widths and branching ratios. Interestingly, while glueballs remain less well understood both theoretically and experimentally, our results are found to be consistent with the experimental data for the scalar glueball candidate f{sub 0}(1500). More generally, holographic QCD predicts that decay of any glueball to 4{pi}{sup 0} is suppressed, and that mixing of the lightest glueball with qq mesons is small.

• OSTI ID: 21250069
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 8 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
COUPLING
GLUEBALLS
HOLOGRAPHY
MESONS
MIXING
PARTICLE DECAY
QUANTUM CHROMODYNAMICS
SCALARS
SIMULATION