Glueball enhancements in p({gamma},VV)p through vector meson dominance

Journal Article · Mon Nov 01 00:00:00 EST 2004 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.70.055201· OSTI ID:20695765

Cotanch, Stephen R; Williams, Robert A ^[1]

---

1. Department of Physics, North Carolina State University, Raleigh, North Carolina 27695-8202 (United States)

Double vector meson photoproduction, p({gamma},G{yields}VV)p, mediated by a scalar glueball G is investigated. Using vector meson dominance (VMD) and Regge/pomeron phenomenology, a glueball enhancement is predicted in the invariant VV={rho}{rho} and {omega}{omega} mass spectra. The resonant cross-section profile is sensitive to the total glueball width, {gamma}{sub G}, but is discernable for {gamma}{sub G}=125 MeV or less. The scalar glueball is assumed to be the lightest physical state on the daughter pomeron trajectory governing diffractive vector meson photoproduction. In addition to cross sections, calculations for hadronic and electromagnetic glueball decays, G{yields}VV{sup '}(V,V{sup '}={rho},{omega},{phi},{gamma}), and {gamma}{sub v}V{yields}G transition form factors are presented based upon flavor universality, VMD, and phenomenological couplings from {phi} photoproduction analyses. Due to limited phase space, the predicted glueball VV decay widths are sensitive to the uncertain glueball mass, however the extracted glueball VV coupling constant is similar to an independent theoretical study. Possible signatures for glueball detection are also discussed.

• OSTI ID: 20695765
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 70, Issue 5; Other Information: DOI: 10.1103/PhysRevC.70.055201; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BAG MODEL
COLOR MODEL
COUPLING CONSTANTS
CROSS SECTIONS
FLAVOR MODEL
FORM FACTORS
GLUEBALLS
HADRONIC PARTICLE DECAY
MASS SPECTRA
MEV RANGE
OMEGA-782 MESONS
PHASE SPACE
PHI-1020 MESONS
PHOTON-PROTON INTERACTIONS
PHOTOPRODUCTION
POMERANCHUK PARTICLES
QUANTUM FIELD THEORY
REGGE POLES
REGGE TRAJECTORIES
RESONANCE PARTICLES
RHO-770 MESONS
SPARTICLES
VECTOR DOMINANCE MODEL