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Implication of neutrino backgrounds on the reach of next generation dark matter direct detection experiments

J. Billard* and E. Figueroa-Feliciano

L. Strigari

  • Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA

  • Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, California 94305, USA and Department of Physics, Indiana University, Bloomington, Indiana 47405, USA

  • *billard@mit.edu
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Phys. Rev. D 89, 023524 – Published 27 January, 2014

DOI: https://doi.org/10.1103/PhysRevD.89.023524

Abstract

As direct dark matter experiments continue to increase in size, they will become sensitive to neutrinos from astrophysical sources. For experiments that do not have directional sensitivity, coherent neutrino scattering from several sources represents an important background to understand, as it can almost perfectly mimic an authentic weakly interacting massive particle (WIMP) signal. Here we explore in detail the effect of neutrino backgrounds on the discovery potential of WIMPs over the entire mass range of 500 MeV to 10 TeV. We show that, given the theoretical and measured uncertainties on the neutrino backgrounds, direct detection experiments lose sensitivity to light (∼10  GeV) and heavy (∼100  GeV) WIMPs with a spin-independent cross section below 10−45 and 10−49  cm2, respectively.

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Phys. Rev. D 89, 023524– Published 27 January, 2014
  • Received 20 July 2013

© 2014 American Physical Society

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