The role of sigma-meson in omega -> pi pi gamma decays and the coupling constant g(omega sigma gamma)

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Gokalp A., Yilmaz O.

PHYSICS LETTERS B, cilt.494, sa.1-2, ss.69-74, 2000 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 494 Sayı: 1-2
  • Basım Tarihi: 2000
  • Doi Numarası: 10.1016/s0370-2693(00)01126-6
  • Dergi Adı: PHYSICS LETTERS B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.69-74
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

We study the omega --> pi pi gamma decays by adding to the amplitude calculated within the framework of chiral perturbation theory and vector meson dominance the amplitude of sigma -meson intermediate state. We estimate the coupling constant g(omega sigma gamma) utilizing the experimental value of the omega --> pi (0)pi (0)gamma decay rate. (C) 2000 Elsevier Science B.V. All rights reserved.