A haloindependent lower bound on the dark matter capture rate in the Sun from a direct detection signal
Abstract
We show that a positive signal in a dark matter (DM) direct detection experiment can be used to place a lower bound on the DM capture rate in the Sun, independent of the DM halo. For a given particle physics model and DM mass we obtain a lower bound on the capture rate independent of the local DM density, velocity distribution, galactic escape velocity, as well as the scattering cross section. We illustrate this lower bound on the capture rate by assuming that upcoming direct detection experiments will soon obtain a significant signal. When comparing the lower bound on the capture rate with limits on the highenergy neutrino flux from the Sun from neutrino telescopes, we can place upper limits on the branching fraction of DM annihilation channels leading to neutrinos. With current data from IceCube and SuperKamiokande nontrivial limits can be obtained for spindependent interactions and direct annihilations into neutrinos. In some cases also annihilations into ττ or bb start getting constrained. For spinindependent interactions current constraints are weak, but they may become interesting for data from future neutrino telescopes.
 Authors:
 Department of Theoretical physics, School of Engineering Sciences,KTH Royal Institute of Technology,AlbaNova University Center, 106 91 Stockholm (Sweden)
 Oskar Klein Centre for Cosmoparticle Physics, Department of Physics,Stockholm University,SE10691 Stockholm (Sweden)
 Publication Date:
 Sponsoring Org.:
 SCOAP3, CERN, Geneva (Switzerland)
 OSTI Identifier:
 22454550
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 05; Other Information: PUBLISHERID: JCAP05(2015)036; OAI: oai:repo.scoap3.org:10397; Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANNIHILATION; BRANCHING RATIO; CROSS SECTIONS; DENSITY; DETECTION; MASS; NEUTRINOS; NONLUMINOUS MATTER; PARTICLE MODELS; SCATTERING; SIGNALS; SPIN; SUN; TELESCOPES
Citation Formats
Blennow, Mattias, HerreroGarcia, Juan, and Schwetz, Thomas. A haloindependent lower bound on the dark matter capture rate in the Sun from a direct detection signal. United States: N. p., 2015.
Web. doi:10.1088/14757516/2015/05/036.
Blennow, Mattias, HerreroGarcia, Juan, & Schwetz, Thomas. A haloindependent lower bound on the dark matter capture rate in the Sun from a direct detection signal. United States. doi:10.1088/14757516/2015/05/036.
Blennow, Mattias, HerreroGarcia, Juan, and Schwetz, Thomas. Thu .
"A haloindependent lower bound on the dark matter capture rate in the Sun from a direct detection signal". United States.
doi:10.1088/14757516/2015/05/036.
@article{osti_22454550,
title = {A haloindependent lower bound on the dark matter capture rate in the Sun from a direct detection signal},
author = {Blennow, Mattias and HerreroGarcia, Juan and Schwetz, Thomas},
abstractNote = {We show that a positive signal in a dark matter (DM) direct detection experiment can be used to place a lower bound on the DM capture rate in the Sun, independent of the DM halo. For a given particle physics model and DM mass we obtain a lower bound on the capture rate independent of the local DM density, velocity distribution, galactic escape velocity, as well as the scattering cross section. We illustrate this lower bound on the capture rate by assuming that upcoming direct detection experiments will soon obtain a significant signal. When comparing the lower bound on the capture rate with limits on the highenergy neutrino flux from the Sun from neutrino telescopes, we can place upper limits on the branching fraction of DM annihilation channels leading to neutrinos. With current data from IceCube and SuperKamiokande nontrivial limits can be obtained for spindependent interactions and direct annihilations into neutrinos. In some cases also annihilations into ττ or bb start getting constrained. For spinindependent interactions current constraints are weak, but they may become interesting for data from future neutrino telescopes.},
doi = {10.1088/14757516/2015/05/036},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 05,
volume = 2015,
place = {United States},
year = {Thu May 21 00:00:00 EDT 2015},
month = {Thu May 21 00:00:00 EDT 2015}
}

We show that a positive signal in a dark matter (DM) direct detection experiment can be used to place a lower bound on the DM capture rate in the Sun, independent of the DM halo. For a given particle physics model and DM mass we obtain a lower bound on the capture rate independent of the local DM density, velocity distribution, galactic escape velocity, as well as the scattering cross section. We illustrate this lower bound on the capture rate by assuming that upcoming direct detection experiments will soon obtain a significant signal. When comparing the lower bound on themore »

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