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Title: The direct detection of boosted dark matter at high energies and PeV events at IceCube

Abstract

We study the possibility of detecting dark matter directly via a small but energetic component that is allowed within present-day constraints. Drawing closely upon the fact that neutral current neutrino nucleon interactions are indistinguishable from DM-nucleon interactions at low energies, we extend this feature to high energies for a small, non-thermal but highly energetic population of DM particle χ, created via the decay of a significantly more massive and long-lived non-thermal relic Φ, which forms the bulk of DM. If χ interacts with nucleons, its cross-section, like the neutrino-nucleus coherent cross-section, can rise sharply with energy leading to deep inelastic scattering, similar to neutral current neutrino-nucleon interactions at high energies. Thus, its direct detection may be possible via cascades in very large neutrino detectors. As a specific example, we apply this notion to the recently reported three ultra-high energy PeV cascade events clustered around 1 – 2 PeV at IceCube (IC). We discuss the features which may help discriminate this scenario from one in which only astrophysical neutrinos constitute the event sample in detectors like IC.

Authors:
 [1];  [2];  [3]
  1. Univ. of Arizona, Tucson, AZ (United States)
  2. Harish-Chandra Research Institute, Jhunsi, Allahabad (India); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  3. Harish-Chandra Research Institute, Jhunsi, Allahabad (India)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1214549
Grant/Contract Number:
FG02-04ER41298; FG02-13ER41976
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2015; Journal Issue: 03; Journal ID: ISSN 1475-7516
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS; dark matter theory; neutrino detectors; ultra high energy photons and neutrinos

Citation Formats

Bhattacharya, A., Gandhi, R., and Gupta, A.. The direct detection of boosted dark matter at high energies and PeV events at IceCube. United States: N. p., 2015. Web. doi:10.1088/1475-7516/2015/03/027.
Bhattacharya, A., Gandhi, R., & Gupta, A.. The direct detection of boosted dark matter at high energies and PeV events at IceCube. United States. doi:10.1088/1475-7516/2015/03/027.
Bhattacharya, A., Gandhi, R., and Gupta, A.. Fri . "The direct detection of boosted dark matter at high energies and PeV events at IceCube". United States. doi:10.1088/1475-7516/2015/03/027. https://www.osti.gov/servlets/purl/1214549.
@article{osti_1214549,
title = {The direct detection of boosted dark matter at high energies and PeV events at IceCube},
author = {Bhattacharya, A. and Gandhi, R. and Gupta, A.},
abstractNote = {We study the possibility of detecting dark matter directly via a small but energetic component that is allowed within present-day constraints. Drawing closely upon the fact that neutral current neutrino nucleon interactions are indistinguishable from DM-nucleon interactions at low energies, we extend this feature to high energies for a small, non-thermal but highly energetic population of DM particle χ, created via the decay of a significantly more massive and long-lived non-thermal relic Φ, which forms the bulk of DM. If χ interacts with nucleons, its cross-section, like the neutrino-nucleus coherent cross-section, can rise sharply with energy leading to deep inelastic scattering, similar to neutral current neutrino-nucleon interactions at high energies. Thus, its direct detection may be possible via cascades in very large neutrino detectors. As a specific example, we apply this notion to the recently reported three ultra-high energy PeV cascade events clustered around 1 – 2 PeV at IceCube (IC). We discuss the features which may help discriminate this scenario from one in which only astrophysical neutrinos constitute the event sample in detectors like IC.},
doi = {10.1088/1475-7516/2015/03/027},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 03,
volume = 2015,
place = {United States},
year = {Fri Mar 13 00:00:00 EDT 2015},
month = {Fri Mar 13 00:00:00 EDT 2015}
}

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Free Publicly Available Full Text
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Cited by: 25 works
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