Neutrino masses in the effective rank-5 subgroups of E-6. II. Supersymmetric case

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Frank M., Sher M., Turan İ.

PHYSICAL REVIEW D, cilt.71, sa.11, 2005 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 71 Sayı: 11
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1103/physrevd.71.113002
  • Dergi Adı: PHYSICAL REVIEW D
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

We present a complete analysis of the neutral fermion sector of supersymmetric E-6-inspired low-energy models containing an extra SU(2), concentrating on the alternative left-right and inert models. We show that the R-parity conserving scenario always exhibits a large Dirac mass for nu(L) with maximal mixing with an isosinglet neutrino, and that R-parity violating scenarios do not change the picture other than allowing further mixing with another isosinglet. In order to recover standard model phenomenology, additional assumptions in the form of discrete symmetries and/or new interactions are needed. We introduce and investigate the discrete symmetry method and higher-dimensional operators as mechanisms for solving the neutrino mass and mixing problems in these models.