2006/07/31 by Hai-Yang Cheng, Chun-Khiang Chua, Keh-Fei Liu · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.74.094005
published as Phys.Rev.D74:094005,2006 · 16 pages; add discussions on the justification of the lattice results as input for this work, to appear in Phys. Rev. D
arxiv created 2006/10/20 · openalex publication_date 2006/11/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The isosinglet scalar mesons f0(1710), f0(1500), f0(1370) and their mixing are studied. We employ two recent lattice results as the starting point; one is the isovector scalar meson a0(1450) which displays an unusual property of being nearly independent of quark mass for quark masses smaller than that of the strange, and the other is the scalar glueball mass at 1710 MeV in the quenched approximation. In the SU(3) symmetry limit, f0(1500) turns out to be a pure SU(3) octet and is degenerate with a0(1450), while f0(1370) is mainly an SU(3) singlet with a slight mixing with the scalar glueball which is the primary component of f0(1710). These features remain essentially unchanged even when SU(3) breaking is taken into account. We discuss the sources of SU(3) breaking and their consequences on flavor-dependent decays of these mesons. The observed enhancement of \ensuremathωf0(1710) production over \ensuremathφf0(1710) in hadronic J/\ensuremathψ decays and the copious f0(1710) production in radiative J/\ensuremathψ decays lend further support to the prominent glueball nature of f0(1710).