Neutrino anomalies in an extended Zee model

Joshipura, Anjan S. ; Rindani, Saurabh D. (1999) Neutrino anomalies in an extended Zee model Physics Letters B, 464 (3-4). pp. 239-243. ISSN 0370-2693

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We discuss an extended SU(2)×U(1) model which naturally leads to mass scales and mixing angles relevant for understanding both the solar and atmospheric neutrino anomalies. No right-handed neutrinos are introduced in the model. The model uses a softly broken Le−Lμ−Lτ symmetry. Neutrino masses arise only at the loop level. The one-loop neutrino masses which arise as in the Zee model solve the atmospheric neutrino anomaly while breaking of Le−Lμ−Lτ generates at two-loop order a mass splitting needed for the vacuum solution of the solar neutrino problem. A somewhat different model is possible which accommodates the large-angle MSW resolution of the solar neutrino problem.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:43580
Deposited On:14 Jun 2011 08:39
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