Determination of f(0) - a(0)(0) mixing angle from QCD sum rules

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ALIYEV T., BİLMİŞ S.

EUROPEAN PHYSICAL JOURNAL A, vol.54, no.9, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 54 Issue: 9
  • Publication Date: 2018
  • Doi Number: 10.1140/epja/i2018-12584-4
  • Journal Name: EUROPEAN PHYSICAL JOURNAL A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Middle East Technical University Affiliated: Yes

Abstract

By assuming that the f(0) and a(0)(0) mesons are mixed states of the two-quark-tetraquark, the mixing angle between them is estimated within the QCD sum rules method, and it is obtained that the mixing angle is (6.03 +/- 0.08)degrees. Our prediction on the mixing angle can be checked in further experiments which can shed light on choosing the "right" structure of f(0) and a(0)(0) mesons.