An analysis of f(0)-sigma mixing in light cone QCD sum rules

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Gokalp A., Sarac Y., Yilmaz O.

PHYSICS LETTERS B, vol.609, no.3-4, pp.291-297, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 609 Issue: 3-4
  • Publication Date: 2005
  • Doi Number: 10.1016/j.physletb.2005.01.055
  • Journal Name: PHYSICS LETTERS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.291-297
  • Middle East Technical University Affiliated: Yes

Abstract

We investigate f(0)-sigma mixing in the framework of light cone QCD sum rules and by employing the experimental results about the decay widths and the masses of these scalar mesons we estimate the scalar mixing angle by using sigma meson data and f(0) meson data. The two values we thus obtain of the scalar mixing angle are not entirely consistent with each other, possibly indicating that the structure of these mesons cannot be simple quark-antiquark states. (c) 2005 Elsevier B.V. All rights reserved.