Dark cosmic rays

If dark matter particles have an electric charge, as in models of millicharged dark matter, such particles should be accelerated in the same astrophysical accelerators that produce ordinary cosmic rays, and their spectra should have a predictable rigidity dependence. Depending on the charge, the res...

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Main Authors: Ping-Kai Hu, Alexander Kusenko, Volodymyr Takhistov
Format: Article
Language:English
Published: Elsevier 2017-05-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269317301387
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author Ping-Kai Hu
Alexander Kusenko
Volodymyr Takhistov
author_facet Ping-Kai Hu
Alexander Kusenko
Volodymyr Takhistov
author_sort Ping-Kai Hu
collection DOAJ
description If dark matter particles have an electric charge, as in models of millicharged dark matter, such particles should be accelerated in the same astrophysical accelerators that produce ordinary cosmic rays, and their spectra should have a predictable rigidity dependence. Depending on the charge, the resulting “dark cosmic rays” can be detected as muon-like or neutrino-like events in Super-Kamiokande, IceCube, and other detectors. We present new limits and propose several new analyses, in particular, for the Super-Kamiokande experiment, which can probe a previously unexplored portion of the millicharged dark matter parameter space. Most of our results are fairly general and apply to a broad class of dark matter models.
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spelling doaj.art-6774502e8386446fbace0ca3b5498f2b2022-12-22T01:59:36ZengElsevierPhysics Letters B0370-26931873-24452017-05-01768C182210.1016/j.physletb.2017.02.035Dark cosmic raysPing-Kai Hu0Alexander Kusenko1Volodymyr Takhistov2Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, CA 90095-1547, USADepartment of Physics and Astronomy, University of California, Los Angeles, Los Angeles, CA 90095-1547, USADepartment of Physics and Astronomy, University of California, Los Angeles, Los Angeles, CA 90095-1547, USAIf dark matter particles have an electric charge, as in models of millicharged dark matter, such particles should be accelerated in the same astrophysical accelerators that produce ordinary cosmic rays, and their spectra should have a predictable rigidity dependence. Depending on the charge, the resulting “dark cosmic rays” can be detected as muon-like or neutrino-like events in Super-Kamiokande, IceCube, and other detectors. We present new limits and propose several new analyses, in particular, for the Super-Kamiokande experiment, which can probe a previously unexplored portion of the millicharged dark matter parameter space. Most of our results are fairly general and apply to a broad class of dark matter models.http://www.sciencedirect.com/science/article/pii/S0370269317301387
spellingShingle Ping-Kai Hu
Alexander Kusenko
Volodymyr Takhistov
Dark cosmic rays
Physics Letters B
title Dark cosmic rays
title_full Dark cosmic rays
title_fullStr Dark cosmic rays
title_full_unstemmed Dark cosmic rays
title_short Dark cosmic rays
title_sort dark cosmic rays
url http://www.sciencedirect.com/science/article/pii/S0370269317301387
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