-parity violating supersymmetric explanation of the anomalous events at ANITA
Abstract
The ANITA balloon experiment has observed two EeV-energy, up-going events originating from well below the horizon. This is puzzling because (i) no standard model (SM) particle is expected to survive passage through Earth at such energies and incident angles, and (ii) no such events were reported by IceCube. In this paper, we address both these issues by invoking a beyond-SM interpretation of the EeV events as due to the decay of a long-lived bino in the R-parity violating (RPV) supersymmetry. In particular, a TeV-scale slepton/squark can be resonantly produced through the interaction of the EeV neutrino with electrons/nucleons inside Earth, which decays to a light, long-lived bino that survives the propagation through Earth matter before decaying back to neutrinos, leptons, and/or quarks, thus producing up-going air showers in the atmosphere near ANITA. We find that the ANITA events can be explained with a GeV-scale bino and O(0.1) RPV couplings, which are consistent with all existing high- and low-energy constraints. We also find that an isotropic neutrino flux is inadequate for a beyond-SM explanation of this kind, and an anisotropic flux must be invoked. Finally, we also address the apparent tension of these observations with IceCube. Various aspects of our interpretationmore »
- Authors:
- Publication Date:
- Research Org.:
- Washington Univ., St. Louis, MO (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Science Foundation (NSF)
- OSTI Identifier:
- 1495073
- Alternate Identifier(s):
- OSTI ID: 1612805
- Grant/Contract Number:
- SC0017987; PHY-1620074
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 99 Journal Issue: 4; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics; Physics; Cosmic ray propagation; Cosmic rays & astroparticles; Extrasolar neutrino astronomy; Particle astrophysics; Supersymmetry
Citation Formats
Collins, Jack H., Dev, P. S. Bhupal, and Sui, Yicong. R -parity violating supersymmetric explanation of the anomalous events at ANITA. United States: N. p., 2019.
Web. doi:10.1103/PhysRevD.99.043009.
Collins, Jack H., Dev, P. S. Bhupal, & Sui, Yicong. R -parity violating supersymmetric explanation of the anomalous events at ANITA. United States. https://doi.org/10.1103/PhysRevD.99.043009
Collins, Jack H., Dev, P. S. Bhupal, and Sui, Yicong. Tue .
"R -parity violating supersymmetric explanation of the anomalous events at ANITA". United States. https://doi.org/10.1103/PhysRevD.99.043009.
@article{osti_1495073,
title = {R -parity violating supersymmetric explanation of the anomalous events at ANITA},
author = {Collins, Jack H. and Dev, P. S. Bhupal and Sui, Yicong},
abstractNote = {The ANITA balloon experiment has observed two EeV-energy, up-going events originating from well below the horizon. This is puzzling because (i) no standard model (SM) particle is expected to survive passage through Earth at such energies and incident angles, and (ii) no such events were reported by IceCube. In this paper, we address both these issues by invoking a beyond-SM interpretation of the EeV events as due to the decay of a long-lived bino in the R-parity violating (RPV) supersymmetry. In particular, a TeV-scale slepton/squark can be resonantly produced through the interaction of the EeV neutrino with electrons/nucleons inside Earth, which decays to a light, long-lived bino that survives the propagation through Earth matter before decaying back to neutrinos, leptons, and/or quarks, thus producing up-going air showers in the atmosphere near ANITA. We find that the ANITA events can be explained with a GeV-scale bino and O(0.1) RPV couplings, which are consistent with all existing high- and low-energy constraints. We also find that an isotropic neutrino flux is inadequate for a beyond-SM explanation of this kind, and an anisotropic flux must be invoked. Finally, we also address the apparent tension of these observations with IceCube. Various aspects of our interpretation are testable in the near future at different frontiers, such as by the LHC, Belle II, ANITA-IV and IceCube.},
doi = {10.1103/PhysRevD.99.043009},
journal = {Physical Review D},
number = 4,
volume = 99,
place = {United States},
year = {Tue Feb 19 00:00:00 EST 2019},
month = {Tue Feb 19 00:00:00 EST 2019}
}
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https://doi.org/10.1103/PhysRevD.99.043009
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Cited by: 34 works
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