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Dark matter freeze-in via a kinetically mixed dark photon

We study a model in which dark matter is a Dirac fermion with sub-GeV mass that interacts with the Standard Model via a dark photon, which kinetically mixes with the photon. We use the Boltzmann equation to calculate the relic abundance predicted by freeze-in and find the coupling strength required...

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Autor principal: Alonso Monsalve, Elba
Lenguaje:eng
Publicado: 2018
Materias:
Acceso en línea:http://cds.cern.ch/record/2634231
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author Alonso Monsalve, Elba
author_facet Alonso Monsalve, Elba
author_sort Alonso Monsalve, Elba
collection CERN
description We study a model in which dark matter is a Dirac fermion with sub-GeV mass that interacts with the Standard Model via a dark photon, which kinetically mixes with the photon. We use the Boltzmann equation to calculate the relic abundance predicted by freeze-in and find the coupling strength required to match the experimental value $\Omega h^2=0.11$. Finally, we compute direct detection cross sections for various dark photon masses. Our results motivate work to increase the sensitivity of current and future direct detection experiments, in order to probe regions in parameter space which are currently inaccessible.
id cern-2634231
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2018
record_format invenio
spelling cern-26342312019-09-30T06:29:59Zhttp://cds.cern.ch/record/2634231engAlonso Monsalve, ElbaDark matter freeze-in via a kinetically mixed dark photonParticle Physics - PhenomenologyWe study a model in which dark matter is a Dirac fermion with sub-GeV mass that interacts with the Standard Model via a dark photon, which kinetically mixes with the photon. We use the Boltzmann equation to calculate the relic abundance predicted by freeze-in and find the coupling strength required to match the experimental value $\Omega h^2=0.11$. Finally, we compute direct detection cross sections for various dark photon masses. Our results motivate work to increase the sensitivity of current and future direct detection experiments, in order to probe regions in parameter space which are currently inaccessible.CERN-STUDENTS-Note-2018-022oai:cds.cern.ch:26342312018-08-13
spellingShingle Particle Physics - Phenomenology
Alonso Monsalve, Elba
Dark matter freeze-in via a kinetically mixed dark photon
title Dark matter freeze-in via a kinetically mixed dark photon
title_full Dark matter freeze-in via a kinetically mixed dark photon
title_fullStr Dark matter freeze-in via a kinetically mixed dark photon
title_full_unstemmed Dark matter freeze-in via a kinetically mixed dark photon
title_short Dark matter freeze-in via a kinetically mixed dark photon
title_sort dark matter freeze-in via a kinetically mixed dark photon
topic Particle Physics - Phenomenology
url http://cds.cern.ch/record/2634231
work_keys_str_mv AT alonsomonsalveelba darkmatterfreezeinviaakineticallymixeddarkphoton