PT Journal
AU Esteves, JN
   Joaquim, FR
   Joshipura, AS
   Romao, JC
   Tortola, M
   Valle, JWF
TI A(4)-based neutrino masses with Majoron decaying dark matter
SO Physical Review D
JI Phys. Rev. D
PY 2010
BP 073008
EP 8pp
VL 82
IS 7
DI 10.1103/PhysRevD.82.073008
LA English
AB We 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.
ER