Constraints and consequences of reducing small scale structure via large dark matter-neutrino interactions
Abstract
Here, cold dark matter explains a wide range of data on cosmological scales. However, there has been a steady accumulation of evidence for discrepancies between simulations and observations at scales smaller than galaxy clusters. One promising way to affect structure formation on small scales is a relatively strong coupling of dark matter to neutrinos. We construct an experimentally viable, simple, renormalizable model with new interactions between neutrinos and dark matter and provide the first discussion of how these new dark matter-neutrino interactions affect neutrino phenomenology. We show that addressing the small scale structure problems requires asymmetric dark matter with a mass that is tens of MeV. Generating a sufficiently large dark matter-neutrino coupling requires a new heavy neutrino with a mass around 100 MeV. The heavy neutrino is mostly sterile but has a substantial τ neutrino component, while the three nearly massless neutrinos are partly sterile. This model can be tested by future astrophysical, particle physics, and neutrino oscillation data. Promising signatures of this model include alterations to the neutrino energy spectrum and flavor content observed from a future nearby supernova, anomalous matter effects in neutrino oscillations, and a component of the τ neutrino with mass around 100 MeV.
- Authors:
-
- Univ. of Washington, Seattle, WA (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Univ. of Washington, Seattle, WA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1455176
- Grant/Contract Number:
- SC0011637
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2015; Journal Issue: 4; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS; Beyond Standard Model; Cosmology of Theories beyond the SM; Neutrino Physics
Citation Formats
Bertoni, Bridget, Ipek, Seyda, McKeen, David, and Nelson, Ann E. Constraints and consequences of reducing small scale structure via large dark matter-neutrino interactions. United States: N. p., 2015.
Web. doi:10.1007/JHEP04(2015)170.
Bertoni, Bridget, Ipek, Seyda, McKeen, David, & Nelson, Ann E. Constraints and consequences of reducing small scale structure via large dark matter-neutrino interactions. United States. https://doi.org/10.1007/JHEP04(2015)170
Bertoni, Bridget, Ipek, Seyda, McKeen, David, and Nelson, Ann E. Thu .
"Constraints and consequences of reducing small scale structure via large dark matter-neutrino interactions". United States. https://doi.org/10.1007/JHEP04(2015)170. https://www.osti.gov/servlets/purl/1455176.
@article{osti_1455176,
title = {Constraints and consequences of reducing small scale structure via large dark matter-neutrino interactions},
author = {Bertoni, Bridget and Ipek, Seyda and McKeen, David and Nelson, Ann E.},
abstractNote = {Here, cold dark matter explains a wide range of data on cosmological scales. However, there has been a steady accumulation of evidence for discrepancies between simulations and observations at scales smaller than galaxy clusters. One promising way to affect structure formation on small scales is a relatively strong coupling of dark matter to neutrinos. We construct an experimentally viable, simple, renormalizable model with new interactions between neutrinos and dark matter and provide the first discussion of how these new dark matter-neutrino interactions affect neutrino phenomenology. We show that addressing the small scale structure problems requires asymmetric dark matter with a mass that is tens of MeV. Generating a sufficiently large dark matter-neutrino coupling requires a new heavy neutrino with a mass around 100 MeV. The heavy neutrino is mostly sterile but has a substantial τ neutrino component, while the three nearly massless neutrinos are partly sterile. This model can be tested by future astrophysical, particle physics, and neutrino oscillation data. Promising signatures of this model include alterations to the neutrino energy spectrum and flavor content observed from a future nearby supernova, anomalous matter effects in neutrino oscillations, and a component of the τ neutrino with mass around 100 MeV.},
doi = {10.1007/JHEP04(2015)170},
journal = {Journal of High Energy Physics (Online)},
number = 4,
volume = 2015,
place = {United States},
year = {Thu Apr 30 00:00:00 EDT 2015},
month = {Thu Apr 30 00:00:00 EDT 2015}
}
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