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Helicitogenesis: WIMPy baryogenesis with sterile neutrinos and other realizations

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Helicitogenesis: WIMPy baryogenesis with sterile neutrinos and other realizations

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dc.contributor.author Racker, Jean Jacques
dc.contributor.author Rius Dionis, Nuria
dc.date.accessioned 2015-04-10T06:02:56Z
dc.date.available 2015-04-10T06:02:56Z
dc.date.issued 2014
dc.identifier.citation Racker, Jean Jacques Rius Dionis, Nuria 2014 Helicitogenesis: WIMPy baryogenesis with sterile neutrinos and other realizations Journal of High Energy Physics 2014 163-1 163-19
dc.identifier.uri http://hdl.handle.net/10550/42959
dc.description.abstract We propose a mechanism for baryogenesis from particle decays or annihilations that can work at the TeV scale. Some heavy particles annihilate or decay into a heavy sterile neutrino N (with M ≳ 0.5 TeV) and a ¿light¿ one ν (with m ≪ 100 GeV), generating an asymmetry among the two helicity degrees of freedom of ν. This asymmetry is partially transferred to Standard Model leptons via fast Yukawa interactions and reprocessed into a baryon asymmetry by the electroweak sphalerons. We illustrate this mechanism in a WIMPy baryogenesis model where the helicity asymmetry is generated in the annihilation of dark matter. This model connects the baryon asymmetry, dark matter, and neutrino masses. Moreover it also complements previous studies on general requirements for baryogenesis from dark matter annihilation. Finally we discuss other possible realizations of this helicitogenesis mechanism.
dc.language.iso eng
dc.relation.ispartof Journal of High Energy Physics, 2014, vol. 2014, p. 163-1-163-19
dc.subject Física
dc.title Helicitogenesis: WIMPy baryogenesis with sterile neutrinos and other realizations
dc.type journal article es_ES
dc.date.updated 2015-04-10T06:02:56Z
dc.identifier.doi 10.1007/JHEP11(2014)163
dc.identifier.idgrec 100526
dc.rights.accessRights open access es_ES

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