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Title

A(4)-based neutrino masses with Majoron decaying dark matter

AuthorsValle, José W. F. ; Tórtola, María Amparo ; Romao, J. C.; Joshipura, Anjan S.; Joaquim, F. R. ; Esteves, J. N.
Issue Date12-Oct-2010
PublisherAmerican Physical Society
CitationPhysical Review - Section D - Particles and Fields 82 (7): 073008 (2010)
AbstractWe propose an A(4) flavor-symmetric SU(3) circle times SU(2) circle times U(1) seesaw model where lepton number is broken spontaneously. A consistent two-zero texture pattern of neutrino masses and mixing emerges from the interplay of type-I and type-II seesaw contributions, with important phenomenological predictions. We show that, if the Majoron becomes massive, such seesaw scenario provides a viable candidate for decaying dark matter, consistent with cosmic microwave background lifetime constraints that follow from current WMAP observations. We also calculate the subleading one-loop-induced decay into photons which leads to a monoenergetic emission line that may be observed in future x-ray missions such as Xenia.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.82.073008
URIhttp://hdl.handle.net/10261/29117
DOI10.1103/PhysRevD.82.073008
ISSN1550-7998
Appears in Collections:(IFIC) Artículos
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