Explaining the ANITA anomaly with inelastic boosted dark matter
Abstract
We propose a new physics scenario in which the decay of a very heavy dark-matter candidate which does not interact with the neutrino sector could explain the two anomalous events recently reported by the Antarctic Impulsive Transient Antenna Collaboration. The model is composed of two components of dark matter, an unstable dark-sector state and a massive dark gauge boson. We assume that the heavier dark-matter particle of an EeV-range mass is distributed over the Galactic halo and disintegrates into a pair of lighter—highly boosted—dark-matter states in the present Universe which reach and penetrate the Earth. The latter scatters inelastically off a nucleon and produces a heavier dark-sector unstable state which subsequently decays back to the lighter dark matter along with hadrons, which induce extensive air showers, via on /off shell dark gauge boson. Depending on the mass hierarchy within the dark sector, either the dark gauge boson or the unstable dark-sector particle can be long-lived, hence transmitted significantly through the Earth. We study the angular distribution of the signal and show that our model favors emergence angles in the range ~25°–35° if the associated parameter choices bear the situation where the mean free path of the boosted incident particle ismore »
- Publication Date:
- Research Org.:
- Univ. of Arizona, Tucson, AZ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Research Foundation of Korea (NRF)
- OSTI Identifier:
- 1560714
- Alternate Identifier(s):
- OSTI ID: 1611220
- Grant/Contract Number:
- FG02-13ER41976; SC0009913; NRF-2019R1C1C1005073; NRF-2018R1A4A1025334; NRF-2017R1D1A1B03032076
- Resource Type:
- Published Article
- Journal Name:
- Physical Review. D.
- Additional Journal Information:
- Journal Name: Physical Review. D. Journal Volume: 100 Journal Issue: 5; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Astronomy & Astrophysics; Physics; Extensions of gauge sector; Particle dark matter
Citation Formats
Heurtier, Lucien, Kim, Doojin, Park, Jong-Chul, and Shin, Seodong. Explaining the ANITA anomaly with inelastic boosted dark matter. United States: N. p., 2019.
Web. doi:10.1103/PhysRevD.100.055004.
Heurtier, Lucien, Kim, Doojin, Park, Jong-Chul, & Shin, Seodong. Explaining the ANITA anomaly with inelastic boosted dark matter. United States. https://doi.org/10.1103/PhysRevD.100.055004
Heurtier, Lucien, Kim, Doojin, Park, Jong-Chul, and Shin, Seodong. Thu .
"Explaining the ANITA anomaly with inelastic boosted dark matter". United States. https://doi.org/10.1103/PhysRevD.100.055004.
@article{osti_1560714,
title = {Explaining the ANITA anomaly with inelastic boosted dark matter},
author = {Heurtier, Lucien and Kim, Doojin and Park, Jong-Chul and Shin, Seodong},
abstractNote = {We propose a new physics scenario in which the decay of a very heavy dark-matter candidate which does not interact with the neutrino sector could explain the two anomalous events recently reported by the Antarctic Impulsive Transient Antenna Collaboration. The model is composed of two components of dark matter, an unstable dark-sector state and a massive dark gauge boson. We assume that the heavier dark-matter particle of an EeV-range mass is distributed over the Galactic halo and disintegrates into a pair of lighter—highly boosted—dark-matter states in the present Universe which reach and penetrate the Earth. The latter scatters inelastically off a nucleon and produces a heavier dark-sector unstable state which subsequently decays back to the lighter dark matter along with hadrons, which induce extensive air showers, via on /off shell dark gauge boson. Depending on the mass hierarchy within the dark sector, either the dark gauge boson or the unstable dark-sector particle can be long-lived, hence transmitted significantly through the Earth. We study the angular distribution of the signal and show that our model favors emergence angles in the range ~25°–35° if the associated parameter choices bear the situation where the mean free path of the boosted incident particle is much larger than the Earth diameter, while its long-lived decay product has a decay length of dimensions comparable to the Earth radius. Our model, in particular, avoids any constraints from complementary neutrino searches such as IceCube or the Auger observatory.},
doi = {10.1103/PhysRevD.100.055004},
journal = {Physical Review. D.},
number = 5,
volume = 100,
place = {United States},
year = {Thu Sep 05 00:00:00 EDT 2019},
month = {Thu Sep 05 00:00:00 EDT 2019}
}
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https://doi.org/10.1103/PhysRevD.100.055004
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Cited by: 27 works
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