2004/03/17 by Stephen R. Cotanch, Robert A. Williams
Physics and Astronomy · #Glueball #Hadron #High-Energy Particle Collisions Research #Meson #Nuclear physics #Omega #Particle physics #Particle physics theoretical and experimental studies #Physics #Pomeron #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #nucl-th
paper · pdf · doi:10.1103/physrevc.70.055201
published as Phys.Rev.C70:055201,2004
arxiv created 2004/03/17 · openalex publication_date 2004/11/09 · arxiv updated 2014/11/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Double vector meson photoproduction, p(\ensuremathγ,G\ensuremath→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=\ensuremathρ\ensuremathρ and \ensuremathω\ensuremathω mass spectra. The resonant cross-section profile is sensitive to the total glueball width, \mathrm\ensuremathΓG, but is discernable for \mathrm\ensuremathΓG=125\phantom\rule0.3em0exMeV 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\ensuremath→VV^\ensuremath'(V,V^\ensuremath'=\ensuremathρ,\ensuremathω,\ensuremathφ,\ensuremathγ), and \ensuremathγvV\ensuremath→G transition form factors are presented based upon flavor universality, VMD, and phenomenological couplings from \ensuremathφ 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.