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Title: Boosted dark matter signals uplifted with self-interaction

Abstract

We explore detection prospects of a non-standard dark sector in the context of boosted dark matter. We focus on a scenario with two dark matter particles of a large mass difference, where the heavier candidate is secluded and interacts with the standard model particles only at loops, escaping existing direct and indirect detection bounds. Yet its pair annihilation in the galactic center or in the Sun may produce boosted stable particles, which could be detected as visible Cherenkov light in large volume neutrino detectors. In such models with multiple candidates, self-interaction of dark matter particles is naturally utilized in the assisted freeze-out mechanism and is corroborated by various cosmological studies such as N-body simulations of structure formation, observations of dwarf galaxies, and the small scale problem. We show that self-interaction of the secluded (heavier) dark matter greatly enhances the capture rate in the Sun and results in promising signals at current and future experiments. We perform a detailed analysis of the boosted dark matter events for Super-Kamiokande, Hyper-Kamiokande and PINGU, including notable effects such as evaporation due to self-interaction and energy loss in the Sun.

Authors:
 [1]; ORCiD logo [1];  [2]
  1. Univ. of Kansas, Lawrence, KS (United States)
  2. Univ. of Kansas, Lawrence, KS (United States); Sungkyunkwan Univ., Suwon (Republic of Korea)
Publication Date:
Research Org.:
Univ. of Kansas, Lawrence, KS (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1228401
Alternate Identifier(s):
OSTI ID: 1188773
Grant/Contract Number:  
FG02-12ER41809; 2301566; NRF-2013R1A1A2061561; 88614; SC0007863
Resource Type:
Journal Article: Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 743; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; boosted dark matter; assisted freeze-out; self-interacting dark matter; dark matter capture; sun; super-K

Citation Formats

Kong, Kyoungchul, Mohlabeng, Gopolang, and Park, Jong -Chul. Boosted dark matter signals uplifted with self-interaction. United States: N. p., 2015. Web. doi:10.1016/j.physletb.2015.02.057.
Kong, Kyoungchul, Mohlabeng, Gopolang, & Park, Jong -Chul. Boosted dark matter signals uplifted with self-interaction. United States. doi:10.1016/j.physletb.2015.02.057.
Kong, Kyoungchul, Mohlabeng, Gopolang, and Park, Jong -Chul. Wed . "Boosted dark matter signals uplifted with self-interaction". United States. doi:10.1016/j.physletb.2015.02.057.
@article{osti_1228401,
title = {Boosted dark matter signals uplifted with self-interaction},
author = {Kong, Kyoungchul and Mohlabeng, Gopolang and Park, Jong -Chul},
abstractNote = {We explore detection prospects of a non-standard dark sector in the context of boosted dark matter. We focus on a scenario with two dark matter particles of a large mass difference, where the heavier candidate is secluded and interacts with the standard model particles only at loops, escaping existing direct and indirect detection bounds. Yet its pair annihilation in the galactic center or in the Sun may produce boosted stable particles, which could be detected as visible Cherenkov light in large volume neutrino detectors. In such models with multiple candidates, self-interaction of dark matter particles is naturally utilized in the assisted freeze-out mechanism and is corroborated by various cosmological studies such as N-body simulations of structure formation, observations of dwarf galaxies, and the small scale problem. We show that self-interaction of the secluded (heavier) dark matter greatly enhances the capture rate in the Sun and results in promising signals at current and future experiments. We perform a detailed analysis of the boosted dark matter events for Super-Kamiokande, Hyper-Kamiokande and PINGU, including notable effects such as evaporation due to self-interaction and energy loss in the Sun.},
doi = {10.1016/j.physletb.2015.02.057},
journal = {Physics Letters. Section B},
number = C,
volume = 743,
place = {United States},
year = {Wed Apr 01 00:00:00 EDT 2015},
month = {Wed Apr 01 00:00:00 EDT 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.physletb.2015.02.057

Citation Metrics:
Cited by: 16 works
Citation information provided by
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