Nonchiral enhancement of scalar glueball decay in the Witten-Sakai-Sugimoto model

Apr 22, 2015
5 pages
Published in:
  • Phys.Rev.Lett. 115 (2015) 13, 131601
  • Published: Sep 21, 2015
e-Print:

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Abstract: (APS)
We estimate the consequences of finite masses of pseudoscalar mesons on the decay rates of scalar glueballs in the Witten-Sakai-Sugimoto model, a top-down holographic model of low-energy QCD, by extrapolating from the calculable vertex of glueball fields and the η′ meson that follows from the Witten-Veneziano mechanism for giving mass to the latter. Evaluating the effect on the recently calculated decay rates of glueballs in the Witten-Sakai-Sugimoto model, we find a strong enhancement of the decay of scalar glueballs into kaons and η mesons, in fairly close agreement with experimental data on the glueball candidate f0(1710).
Note:
  • 6 pages, 2 tables; v3: minor modifications and references added
  • 11.25.Tq
  • 13.25.Jx
  • 14.40.Be
  • 14.40.Rt
  • glueball: scalar
  • glueball: decay rate
  • glueball: decay
  • decay: enhancement
  • pseudoscalar meson: mass
  • decay rate: calculated