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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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Lenguaje: | eng |
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2018
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Acceso en línea: | http://cds.cern.ch/record/2634231 |
_version_ | 1780959689900556288 |
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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 |