Explaining the ANITA anomaly with inelastic boosted dark matter
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...
Published in: | Physical Review D |
---|---|
Main Authors: | , , , |
Language: | unknown |
Published: |
2023
|
Subjects: | |
Online Access: | http://www.osti.gov/servlets/purl/1611220 https://www.osti.gov/biblio/1611220 https://doi.org/10.1103/physrevd.100.055004 |
id |
ftosti:oai:osti.gov:1611220 |
---|---|
record_format |
openpolar |
spelling |
ftosti:oai:osti.gov:1611220 2023-07-30T03:59:25+02:00 Explaining the ANITA anomaly with inelastic boosted dark matter Heurtier, Lucien Kim, Doojin Park, Jong-Chul Shin, Seodong 2023-07-03 application/pdf http://www.osti.gov/servlets/purl/1611220 https://www.osti.gov/biblio/1611220 https://doi.org/10.1103/physrevd.100.055004 unknown http://www.osti.gov/servlets/purl/1611220 https://www.osti.gov/biblio/1611220 https://doi.org/10.1103/physrevd.100.055004 doi:10.1103/physrevd.100.055004 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS 2023 ftosti https://doi.org/10.1103/physrevd.100.055004 2023-07-11T09:41:15Z 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. Other/Unknown Material Antarc* Antarctic SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Antarctic The Antarctic Physical Review D 100 5 |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
spellingShingle |
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Heurtier, Lucien Kim, Doojin Park, Jong-Chul Shin, Seodong Explaining the ANITA anomaly with inelastic boosted dark matter |
topic_facet |
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
description |
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. |
author |
Heurtier, Lucien Kim, Doojin Park, Jong-Chul Shin, Seodong |
author_facet |
Heurtier, Lucien Kim, Doojin Park, Jong-Chul Shin, Seodong |
author_sort |
Heurtier, Lucien |
title |
Explaining the ANITA anomaly with inelastic boosted dark matter |
title_short |
Explaining the ANITA anomaly with inelastic boosted dark matter |
title_full |
Explaining the ANITA anomaly with inelastic boosted dark matter |
title_fullStr |
Explaining the ANITA anomaly with inelastic boosted dark matter |
title_full_unstemmed |
Explaining the ANITA anomaly with inelastic boosted dark matter |
title_sort |
explaining the anita anomaly with inelastic boosted dark matter |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1611220 https://www.osti.gov/biblio/1611220 https://doi.org/10.1103/physrevd.100.055004 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://www.osti.gov/servlets/purl/1611220 https://www.osti.gov/biblio/1611220 https://doi.org/10.1103/physrevd.100.055004 doi:10.1103/physrevd.100.055004 |
op_doi |
https://doi.org/10.1103/physrevd.100.055004 |
container_title |
Physical Review D |
container_volume |
100 |
container_issue |
5 |
_version_ |
1772810239478857728 |