Prospects for dark matter detection with IceCube in the context of the CMSSM
File(s)
Accepted version
Author(s)
Trotta, R
Ruiz de Austri, R
de los Heros, CP
Type
Journal Article
Abstract
We study in detail the ability of the nominal configuration of the IceCube neutrino
telescope (with 80 strings) to probe the parameter space of the Constrained MSSM (CMSSM) favoured by current collider and cosmological data. Adopting conservative assumptions about the galactic halo model and the expected experiment performance, we find that IceCube has a probability between 2% and 12% of achieving a 5σ detection of dark matter annihilation in the Sun, depending on the choice of priors for the scalar and gaugino masses and on the astrophysical assumptions. We identify the most important annihilation
channels in the CMSSM parameter space favoured by current constraints, and we demonstrate that assuming that the signal is dominated by a single annihilation channel can lead to large systematic errors in the inferred WIMP annihilation cross section. We demonstrate that ∼ 66% of the CMSSM parameter space violates the equilibrium condition between capture and annihilation in the center of the Sun. By cross-correlating our predictions with
direct detection methods, we conclude that if IceCube does detect a neutrino flux from the Sun at high significance while direct detection experiments do not find a signal above a spinindependent cross section σSIp>∼ 7× 10−9 pb, the CMSSM will be strongly disfavoured, given standard astrophysical assumptions for the WIMP distribution. This result is robust with respect to a change of priors. We argue that the proposed low-energy DeepCore extension of
IceCube will be an ideal instrument to focus on relevant CMSSM areas of parameter space.
telescope (with 80 strings) to probe the parameter space of the Constrained MSSM (CMSSM) favoured by current collider and cosmological data. Adopting conservative assumptions about the galactic halo model and the expected experiment performance, we find that IceCube has a probability between 2% and 12% of achieving a 5σ detection of dark matter annihilation in the Sun, depending on the choice of priors for the scalar and gaugino masses and on the astrophysical assumptions. We identify the most important annihilation
channels in the CMSSM parameter space favoured by current constraints, and we demonstrate that assuming that the signal is dominated by a single annihilation channel can lead to large systematic errors in the inferred WIMP annihilation cross section. We demonstrate that ∼ 66% of the CMSSM parameter space violates the equilibrium condition between capture and annihilation in the center of the Sun. By cross-correlating our predictions with
direct detection methods, we conclude that if IceCube does detect a neutrino flux from the Sun at high significance while direct detection experiments do not find a signal above a spinindependent cross section σSIp>∼ 7× 10−9 pb, the CMSSM will be strongly disfavoured, given standard astrophysical assumptions for the WIMP distribution. This result is robust with respect to a change of priors. We argue that the proposed low-energy DeepCore extension of
IceCube will be an ideal instrument to focus on relevant CMSSM areas of parameter space.
Date Issued
2009-08-26
Date Acceptance
2009-07-27
Citation
Journal of Cosmology and Astroparticle Physics, 2009, 2009 (8)
ISSN
1475-7516
Publisher
IOP Publishing Ltd
Journal / Book Title
Journal of Cosmology and Astroparticle Physics
Volume
2009
Issue
8
Copyright Statement
© 2009 IOP Publishing Ltd and SISSA
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
ASTRONOMY & ASTROPHYSICS
PHYSICS, PARTICLES & FIELDS
dark matter theory
neutrino detectors
neutrino astronomy
dark matter experiments
STANDARD MODEL
PARTICLE PHYSICS
SUPERSYMMETRY
MUON
NEUTRINOS
LIMITS
SUN
ANNIHILATIONS
CAPTURE
SEARCH
astro-ph.HE
hep-ph
Nuclear & Particles Physics
0201 Astronomical And Space Sciences
0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics
Publication Status
Published
Article Number
034