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A(4)-based neutrino masses with Majoron decaying dark matter
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A(4)-based neutrino masses with Majoron decaying dark matter
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| Esteves, J. N.; Joaquim, F.R.; Joshipura, Anjan S.; Romao, J. C.; Tórtola Baixauli, María Amparo; Furtado Valle, José Wagner | |||
| Aquest document és un/a article, creat/da en: 2010 | |||
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| We propose an A_4 flavor-symmetric SU(3)xSU(2)xU(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 sub-leading one-loop-induced decay into photons which leads to a mono-energetic emission line that may be observed in future X-ray missions such as Xenia. | |||
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