Chiral Suppression of Scalar Glueball Decay
High Energy Physics - Phenomenology
2008-11-26 v2 High Energy Physics - Experiment
High Energy Physics - Lattice
Abstract
Because glueballs are SU(3)_{Flavor} singlets, they are expected to couple equally to u,d, and s quarks, so that equal coupling strengths to \pi^+\pi^- and K^+K^- are predicted. However, we show that chiral symmetry implies the scalar glueball amplitude for G_0 \to \qbq is proportional to the quark mass, so that mixing with \sbs mesons is enhanced and decays to K^+K^- are favored over \pi^+\pi^-. Together with evidence from lattice calculations and from experiment, this supports the hypothesis that f_0(1710) is the ground state scalar glueball.
Cite
@article{arxiv.hep-ph/0506125,
title = {Chiral Suppression of Scalar Glueball Decay},
author = {Michael Chanowitz},
journal= {arXiv preprint arXiv:hep-ph/0506125},
year = {2008}
}
Comments
9 pages; This revision reconciles posting (approximately) with published version. Posting contains figures that are omitted in the publication