Higgsino-like dark matter from sneutrino late decays

We consider Higgsino-like dark matter (DM) in the Minimal Supersymmetric Standard Model (MSSM) with additional right-handed neutrino chiral superfields, and propose a new non-thermal way of generating the right amount of relic DM via sneutrino late decays. Due to the large DM annihilation cross-sect...

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Autor principal: Medina, Aníbal Damián
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2017
Materias:
Física
Dark matter
Neutrinos
Supersymmetry
Freeze in
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/99170
https://ri.conicet.gov.ar/11336/50040
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-99170
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Dark matter
Neutrinos
Supersymmetry
Freeze in
spellingShingle Física
Dark matter
Neutrinos
Supersymmetry
Freeze in
Medina, Aníbal Damián
Higgsino-like dark matter from sneutrino late decays
topic_facet Física
Dark matter
Neutrinos
Supersymmetry
Freeze in
description We consider Higgsino-like dark matter (DM) in the Minimal Supersymmetric Standard Model (MSSM) with additional right-handed neutrino chiral superfields, and propose a new non-thermal way of generating the right amount of relic DM via sneutrino late decays. Due to the large DM annihilation cross-section, decays must occur at lower temperatures than the freeze-out temperature Td≪TF,χ˜1 0∼μ/25, implying a mostly right-handed lightest sneutrino with very small Yukawa interactions. In that context, the right amount of Higgsino-like DM relic density can be accounted for if sneutrinos are produced via thermal freeze-in in the early Universe.
format Articulo
Preprint
author Medina, Aníbal Damián
author_facet Medina, Aníbal Damián
author_sort Medina, Aníbal Damián
title Higgsino-like dark matter from sneutrino late decays
title_short Higgsino-like dark matter from sneutrino late decays
title_full Higgsino-like dark matter from sneutrino late decays
title_fullStr Higgsino-like dark matter from sneutrino late decays
title_full_unstemmed Higgsino-like dark matter from sneutrino late decays
title_sort higgsino-like dark matter from sneutrino late decays
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/99170
https://ri.conicet.gov.ar/11336/50040
work_keys_str_mv AT medinaanibaldamian higgsinolikedarkmatterfromsneutrinolatedecays
bdutipo_str Repositorios
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