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Title: Solar atmospheric neutrinos and the sensitivity floor for solar dark matter annihilation searches

Abstract

Cosmic rays interacting in the solar atmosphere produce showers that result in a flux of high-energy neutrinos from the Sun. These form an irreducible background to indirect solar WIMP self-annihilation searches, which look for heavy dark matter particles annihilating into final states containing neutrinos in the Solar core. This background will eventually create a sensitivity floor for indirect WIMP self-annihilation searches analogous to that imposed by low-energy solar neutrino interactions for direct dark matter detection experiments. We present a new calculation of the flux of solar atmospheric neutrinos with a detailed treatment of systematic uncertainties inherent in solar atmospheric shower evolution, and we use this to derive the sensitivity floor for indirect solar WIMP annihilation analyses. We find that the floor lies less than one order of magnitude beyond the present experimental limits on spin-dependent WIMP-proton cross sections for some mass points, and that the high-energy solar atmospheric neutrino flux may be observable with running and future neutrino telescopes.

Authors:
 [1];  [2];  [3];  [4]
  1. Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge MA (United States)
  2. Vrije Universiteit Brussel, Pleinlaan 2, 1050 Elsene, Brussels (Belgium)
  3. Karlsruhe Institute of Technology, 76021 Karlsruhe (Germany)
  4. University of Texas at Arlington, 108 Science Hall, 502 Yates St, Arlington TX (United States)
Publication Date:
OSTI Identifier:
22676103
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2017; Journal Issue: 07; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANNIHILATION; COSMIC RADIATION; COSMIC SHOWERS; CROSS SECTIONS; DETECTION; MASS; NONLUMINOUS MATTER; PROTONS; SENSITIVITY; SOLAR ATMOSPHERE; SOLAR NEUTRINOS; SPIN; SUN; TELESCOPES; WIMPS

Citation Formats

Argüelles, C.A., De Wasseige, G., Fedynitch, A., and Jones, B.J.P., E-mail: caad@mit.edu, E-mail: gdewasse@vub.ac.be, E-mail: anatoli.fedynitch@desy.de, E-mail: ben.jones@uta.edu. Solar atmospheric neutrinos and the sensitivity floor for solar dark matter annihilation searches. United States: N. p., 2017. Web. doi:10.1088/1475-7516/2017/07/024.
Argüelles, C.A., De Wasseige, G., Fedynitch, A., & Jones, B.J.P., E-mail: caad@mit.edu, E-mail: gdewasse@vub.ac.be, E-mail: anatoli.fedynitch@desy.de, E-mail: ben.jones@uta.edu. Solar atmospheric neutrinos and the sensitivity floor for solar dark matter annihilation searches. United States. doi:10.1088/1475-7516/2017/07/024.
Argüelles, C.A., De Wasseige, G., Fedynitch, A., and Jones, B.J.P., E-mail: caad@mit.edu, E-mail: gdewasse@vub.ac.be, E-mail: anatoli.fedynitch@desy.de, E-mail: ben.jones@uta.edu. Sat . "Solar atmospheric neutrinos and the sensitivity floor for solar dark matter annihilation searches". United States. doi:10.1088/1475-7516/2017/07/024.
@article{osti_22676103,
title = {Solar atmospheric neutrinos and the sensitivity floor for solar dark matter annihilation searches},
author = {Argüelles, C.A. and De Wasseige, G. and Fedynitch, A. and Jones, B.J.P., E-mail: caad@mit.edu, E-mail: gdewasse@vub.ac.be, E-mail: anatoli.fedynitch@desy.de, E-mail: ben.jones@uta.edu},
abstractNote = {Cosmic rays interacting in the solar atmosphere produce showers that result in a flux of high-energy neutrinos from the Sun. These form an irreducible background to indirect solar WIMP self-annihilation searches, which look for heavy dark matter particles annihilating into final states containing neutrinos in the Solar core. This background will eventually create a sensitivity floor for indirect WIMP self-annihilation searches analogous to that imposed by low-energy solar neutrino interactions for direct dark matter detection experiments. We present a new calculation of the flux of solar atmospheric neutrinos with a detailed treatment of systematic uncertainties inherent in solar atmospheric shower evolution, and we use this to derive the sensitivity floor for indirect solar WIMP annihilation analyses. We find that the floor lies less than one order of magnitude beyond the present experimental limits on spin-dependent WIMP-proton cross sections for some mass points, and that the high-energy solar atmospheric neutrino flux may be observable with running and future neutrino telescopes.},
doi = {10.1088/1475-7516/2017/07/024},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 07,
volume = 2017,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 2017},
month = {Sat Jul 01 00:00:00 EDT 2017}
}
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