The poker face of the Majoron dark matter model: LUX to keV line
作者： Farinaldo S. Queiroz , Kuver Sinha
DOI: 10.1016/J.PHYSLETB.2014.06.016
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摘要: Abstract We study the viability of pseudo Nambu–Goldstone bosons (Majorons) arising in see-saw models as dark matter candidates. Interestingly stability Majoron is related to scale that sets and leptogenesis mechanisms, while its annihilation scattering cross section off nuclei can be set through Higgs portal. For O ( GeV ) – TeV Majorons, we compute observables such abundance, section, invisible decay width, emission lines compare with current data order outline excluded versus still viable parameter space regions. conclude simplest coupling portal, except at resonance, are by direct detection for Majorons lighter than 225 future runnings expected rule out decisively 1 GeV–1 window. Lastly, point light keV-scale whose relic density thermal freeze-in from sterile neutrinos account keV line observed XMM-Newton observatory spectrum 73 galaxy clusters, within a model triplet Higgs.
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