A right-handed neutrino dark matter phenomenology

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dc.contributor.advisorQueiroz, Farinaldo da Silva
dc.contributor.advisor-co1Siqueira, Clarissa Martins
dc.contributor.advisorIDhttps://orcid.org/0000-0002-7141-5532pt_BR
dc.contributor.advisorLatteshttp://lattes.cnpq.br/9966377792236208pt_BR
dc.contributor.authorSilva Neto, Jacinto Paulo da
dc.contributor.authorLatteshttp://lattes.cnpq.br/4542506220770970pt_BR
dc.contributor.referees1Alcaniz, Jailson Souza de
dc.contributor.referees1IDhttps://orcid.org/0000-0003-2441-1413pt_BR
dc.contributor.referees1Latteshttp://lattes.cnpq.br/4351190607357917pt_BR
dc.contributor.referees2Silva, Paulo Sérgio Rodrigues da
dc.date.accessioned2022-07-07T22:09:39Z
dc.date.available2022-07-07T22:09:39Z
dc.date.issued2022-04-08
dc.description.resumoRight-handed neutrinos appear in several extensions beyond the Standard Model, specially in connection to neutrino masses. Motivated by this, we present a model of right-handed neutrino dark matter that interacts with Standard Model particles through a new gauge symmetry as well as via mass mixing between the new vector field and the Z boson, and investigate different production mechanisms. We derive the dark matter relic density in the Standard Cosmological Model, when the Hubble rate is faster than usual, when dark matter decouples in a matter domination epoch, and when it decouples in a radiation domination regime, which is then followed by a matter domination era. The direct detection rate features a spin-independent but velocity suppressed operators, as well as a spin-dependent operator when the mass mixing is correctly accounted for. We put all these results into perspective with existing flavor physics, atomic parity violation, and collider bounds. Lastly, we outline the region of parameter space in which a weak scale right-handed neutrino dark matter stands as a viable dark matter candidate.pt_BR
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESpt_BR
dc.identifier.citationSILVA NETO, Jacinto Paulo da. A right-handed neutrino dark matter phenomenology. 2022. 134f. Dissertação (Mestrado em Física) - Centro de Ciências Exatas e da Terra, Universidade Federal do Rio Grande do Norte, Natal, 2022.pt_BR
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/48396
dc.languagept_BRpt_BR
dc.publisherUniversidade Federal do Rio Grande do Nortept_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.initialsUFRNpt_BR
dc.publisher.programPROGRAMA DE PÓS-GRADUAÇÃO EM FÍSICApt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectMatéria escurapt_BR
dc.subjectDark matter phenomenologypt_BR
dc.subjectRight-handed neutrinopt_BR
dc.subjectNon-standard cosmologypt_BR
dc.subjectRelic abundancept_BR
dc.titleA right-handed neutrino dark matter phenomenologypt_BR
dc.typemasterThesispt_BR

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