Direct detection of freeze-in inelastic dark matter

We show that the current sensitivities of direct detection experiments have already reached the interesting parameter space of freeze-in dark matter models if the dark sector is in the inelastic dark matter framework and the excited dark matter state is cosmologically stable. Using results recently...

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Main Authors: Haipeng An, Daneng Yang
Format: Article
Language:English
Published: Elsevier 2021-07-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269321003488
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author Haipeng An
Daneng Yang
author_facet Haipeng An
Daneng Yang
author_sort Haipeng An
collection DOAJ
description We show that the current sensitivities of direct detection experiments have already reached the interesting parameter space of freeze-in dark matter models if the dark sector is in the inelastic dark matter framework and the excited dark matter state is cosmologically stable. Using results recently presented by the XENON1T experiment, we present constraints on these models. We also show that these models can explain the reported excess in the electron recoil signals if the mass gap between the ground state and the excited state is at keV scale.
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spelling doaj.art-a2a81817581941d1ab6178ed537cb0552022-12-21T22:08:28ZengElsevierPhysics Letters B0370-26932021-07-01818136408Direct detection of freeze-in inelastic dark matterHaipeng An0Daneng Yang1Department of Physics, Tsinghua University, Beijing 100084, China; Center for High Energy Physics, Tsinghua University, Beijing 100084, China; Corresponding author.Department of Physics, Tsinghua University, Beijing 100084, ChinaWe show that the current sensitivities of direct detection experiments have already reached the interesting parameter space of freeze-in dark matter models if the dark sector is in the inelastic dark matter framework and the excited dark matter state is cosmologically stable. Using results recently presented by the XENON1T experiment, we present constraints on these models. We also show that these models can explain the reported excess in the electron recoil signals if the mass gap between the ground state and the excited state is at keV scale.http://www.sciencedirect.com/science/article/pii/S0370269321003488
spellingShingle Haipeng An
Daneng Yang
Direct detection of freeze-in inelastic dark matter
Physics Letters B
title Direct detection of freeze-in inelastic dark matter
title_full Direct detection of freeze-in inelastic dark matter
title_fullStr Direct detection of freeze-in inelastic dark matter
title_full_unstemmed Direct detection of freeze-in inelastic dark matter
title_short Direct detection of freeze-in inelastic dark matter
title_sort direct detection of freeze in inelastic dark matter
url http://www.sciencedirect.com/science/article/pii/S0370269321003488
work_keys_str_mv AT haipengan directdetectionoffreezeininelasticdarkmatter
AT danengyang directdetectionoffreezeininelasticdarkmatter