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Title: Cosmic-ray upscattered inelastic dark matter

Abstract

Light non-relativistic components of the galactic dark matter halo elude direct detection constraints because they lack the kinetic energy to create an observable recoil. However, cosmic-rays can upscatter dark matter to significant energies, giving direct detection experiments access to previously unreachable regions of parameter-space at very low dark matter mass. In this work we extend the cosmic-ray dark matter formalism to models of inelastic dark matter and show that previously inaccessible regions of the mass-splitting parameter space can be probed. Conventional direct detection of non-relativistic halo dark matter is limited to mass splittings of δ ~ 10 keV and is highly mass dependent. We find that including the effect of cosmic-ray upscattering can extend the reach to mass splittings of δ ~ 100 MeV, and maintain that reach at much lower dark matter mass.

Authors:
ORCiD logo; ; ; ; ; ORCiD logo;
Publication Date:
Research Org.:
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); Australian Research Council (ARC)
OSTI Identifier:
1826850
Alternate Identifier(s):
OSTI ID: 1903710
Grant/Contract Number:  
SC0010813; SC0010504; SC0020250; CE200100008
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 104 Journal Issue: 7; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Bell, Nicole F., Dent, James B., Dutta, Bhaskar, Ghosh, Sumit, Kumar, Jason, Newstead, Jayden L., and Shoemaker, Ian M. Cosmic-ray upscattered inelastic dark matter. United States: N. p., 2021. Web. doi:10.1103/PhysRevD.104.076020.
Bell, Nicole F., Dent, James B., Dutta, Bhaskar, Ghosh, Sumit, Kumar, Jason, Newstead, Jayden L., & Shoemaker, Ian M. Cosmic-ray upscattered inelastic dark matter. United States. https://doi.org/10.1103/PhysRevD.104.076020
Bell, Nicole F., Dent, James B., Dutta, Bhaskar, Ghosh, Sumit, Kumar, Jason, Newstead, Jayden L., and Shoemaker, Ian M. Thu . "Cosmic-ray upscattered inelastic dark matter". United States. https://doi.org/10.1103/PhysRevD.104.076020.
@article{osti_1826850,
title = {Cosmic-ray upscattered inelastic dark matter},
author = {Bell, Nicole F. and Dent, James B. and Dutta, Bhaskar and Ghosh, Sumit and Kumar, Jason and Newstead, Jayden L. and Shoemaker, Ian M.},
abstractNote = {Light non-relativistic components of the galactic dark matter halo elude direct detection constraints because they lack the kinetic energy to create an observable recoil. However, cosmic-rays can upscatter dark matter to significant energies, giving direct detection experiments access to previously unreachable regions of parameter-space at very low dark matter mass. In this work we extend the cosmic-ray dark matter formalism to models of inelastic dark matter and show that previously inaccessible regions of the mass-splitting parameter space can be probed. Conventional direct detection of non-relativistic halo dark matter is limited to mass splittings of δ ~ 10 keV and is highly mass dependent. We find that including the effect of cosmic-ray upscattering can extend the reach to mass splittings of δ ~ 100 MeV, and maintain that reach at much lower dark matter mass.},
doi = {10.1103/PhysRevD.104.076020},
journal = {Physical Review D},
number = 7,
volume = 104,
place = {United States},
year = {2021},
month = {10}
}

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