B decays in an asymmetric left-right model

Creative Commons License

Frank M., Hayreter A., Turan İ.

PHYSICAL REVIEW D, cilt.82, sa.3, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 82 Sayı: 3
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1103/physrevd.82.033012
  • Dergi Adı: PHYSICAL REVIEW D
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

Motivated by recently observed disagreements with the standard model predictions in B decays, we study b -> d, s transitions in an asymmetric class of SU(2)(L) x SU(2)(R) x U(1)(B-L) models, with a simple one-parameter structure of the right-handed mixing matrix for the quarks, which obeys the constraints from kaon physics. We use experimental constraints on the branching ratios of b -> s gamma, b -> ce (nu) over bar (e), and B-d,s(0) - (B) over barB(d,s)(0) mixing to restrict the parameters of the model: g(R)/g(L), M-W2, MH+, tan beta as well as the elements of the right-handed quark mixing matrix V-CKM(R). We present a comparison with the more commonly used (manifest) left-right symmetric model. Our analysis exposes the parameters most sensitive to b transitions and reveals a large parameter space where left-and right-handed quarks mix differently, opening the possibility of observing marked differences in behavior between the standard model and the left-right model.