σ-Meson and ω-ρ mixing effects in ω → π+π-γ decay

Gokalp A., Kucukarslan A., Solmaz S., YILMAZ O.

Acta Physica Polonica B, vol.34, no.8, pp.4095-4104, 2003 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 34 Issue: 8
  • Publication Date: 2003
  • Journal Name: Acta Physica Polonica B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.4095-4104
  • Çanakkale Onsekiz Mart University Affiliated: No

Abstract

We calculate the branching ratio of ω → π+π-γ decay in a phenomenological framework in which the contributions of VMD, chiral loops, σ-meson intermediate state amplitudes and the effects of ω-ρ mixing are considered. We conclude that the σ-meson intermediate state amplitude and ω-ρ mixing make substantial contribution to the branching ratio.