Chiral suppression of scalar glueball decay

Jun, 2005
9 pages
Published in:
  • Phys.Rev.Lett. 95 (2005) 172001
e-Print:
Report number:
  • LBNL-57700

Citations per year

2005201020152020202402468101214
Abstract: (arXiv)
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.
  • 11.30.Rd
  • 12.39.Mk
  • f mesons
  • quantum chromodynamics
  • chiral symmetries
  • SU(3) theory
  • flavour model
  • quark confinement
  • meson decay
  • glueball: scalar
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