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WIMP dark matter as radiative neutrino mass messenger

AuthorsHirsch, Martin ; Lineros Rodríguez, Roberto Alfredo ; Morisi, Stefano; Palacio, Joaquim ; Rojas Rojas, Nicolás; Valle, José W. F.
KeywordsBeyond Standard Model
Cosmology of Theories beyond the SM
Neutrino Physics
Issue Date23-Oct-2013
CitationJournal of High Energy Physics 10 (10): 149 - 18 (2013)
AbstractThe minimal seesaw extension of the Standard SU(3)(c)circle times SU(2)(L)circle times U(1)(Y) Model requires two electroweak singlet fermions in order to accommodate the neutrino oscillation parameters at tree level. Here we consider a next to minimal extension where light neutrino masses are generated radiatively by two electroweak fermions: one singlet and one triplet under SU(2)(L). These should be odd under a parity symmetry and their mixing gives rise to a stable weakly interactive massive particle (WIMP) dark matter candidate. For mass in the GeV-TeV range, it reproduces the correct relic density, and provides an observable signal in nuclear recoil direct detection experiments. The fermion triplet component of the dark matter has gauge interactions, making it also detectable at present and near future collider experiments.
Publisher version (URL)http://dx.doi.org/10.1007/JHEP10(2013)149
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