Fermion WIMPless dark matter at DeepCore and IceCube

Journal Article · Tue Jun 01 04:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.115010· OSTI ID:21413208

Barger, Vernon ^[1]; Kumar, Jason ^[2]; Marfatia, Danny; Sessolo, Enrico Maria ^[3]

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1. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)
2. Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822 (United States)
3. Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045 (United States)

We investigate the prospects for indirect detection of fermion WIMPless dark matter at the neutrino telescopes IceCube and DeepCore. The dark matter annihilating in the Sun is a hidden sector Majorana fermion that couples through Yukawa couplings to a connector particle and a visible sector particle, and it exhibits only spin-dependent scattering with nuclei via couplings to first generation quarks. We consider cases where the annihilation products are taus, staus, or sneutrinos of the three generations. To evaluate the muon fluxes incident at the detector, we propagate the neutrino spectra through the solar medium and to the Earth and account for the effects of neutrino oscillations, energy losses due to neutral- and charged-current interactions, and tau regeneration. We find that for the stau and sneutrino channels, a 5 yr 3{sigma} detection of dark matter lighter than about 300 GeV is possible at IceCube for large Yukawa couplings or for dark matter and connector particles with similar masses. The tau channel offers far better detection prospects. However, due to its lower energy threshold and better muon background rejection capability, DeepCore is able to detect signals in all annihilation channels and for a wider range of dark matter masses.

• OSTI ID: 21413208
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
ANNIHILATION
CHARGED-CURRENT INTERACTIONS
COUPLING
CURRENTS
ELEMENTARY PARTICLES
ENERGY LOSSES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 100-1000
INTERACTIONS
LEPTONS
LOSSES
MAIN SEQUENCE STARS
MAJORANA THEORY
MASS
MASSLESS PARTICLES
MATTER
MUONS
NEUTRAL CURRENTS
NEUTRINO OSCILLATION
NEUTRINOS
NONLUMINOUS MATTER
NUCLEAR POTENTIAL
PARTICLE INTERACTIONS
POSTULATED PARTICLES
POTENTIALS
QUARKS
REGENERATION
SCATTERING
SPARTICLES
SPECTRA
STARS
SUN
TELESCOPES
YUKAWA POTENTIAL