Indirect Detection of a Light Higgsino Motivated by Collider Data

Abstract

Kane and Wells recently argued that collider data point to a Higgsino-like lightest supersymmetric partner which would explain the dark matter in our Galactic halo. They discuss direct detection of such dark-matter particles in laboratory detectors. Here, we argue that such a particle, if it is indeed the dark matter, might alternatively be accessible in experiments which search for energetic neutrinos from dark-matter annihilation in the Sun. We provide accurate analytic estimates for the rates which take into account all relevant physical effects. Currently, the predicted signal falls roughly one to three orders of magnitude below experimental bounds, depending on the mass and coupling of the particle; however, detectors such as MACRO, super-Kamiokande, and AMANDA will continue to take data and should be able to rule out or confirm an interesting portion of the possible mass range for such a dark-matter particle within the next five years.

10 pages, RevTeX

References in corpus (6)

• Supersymmetric Dark Matter
• Measurement of the Spin-Dependent Structure Function $g_1(x)$ of the Proton
• Supersymmetric analysis and predictions based on the CDF eeγγ+ missing E_T event
• Neutrinos From Particle Decay in the Sun and Earth
• Model-Independent Comparison of Direct vs. Indirect Detection of Supersymmetric Dark Matter
• Higgsino Cold Dark Matter Motivated by Collider Data

Cited by in corpus (12)

• Compatibility of DAMA/LIBRA dark matter detection with other searches
• Hadronic Uncertainties in the Elastic Scattering of Supersymmetric Dark Matter
• Prospects for Indirect Detection of Neutralino Dark Matter
• Light Higgsino Dark Matter
• Can WIMP Spin Dependent Couplings explain DAMA data, in light of Null Results from Other Experiments?
• Compatibility of DAMA/LIBRA dark matter detection with other searches in light of new Galactic rotation velocity measurements
• Neutrino Fluxes from CMSSM LSP Annihilations in the Sun
• Neutrino Fluxes from NUHM LSP Annihilations in the Sun
• Deep Learning Jet Image as a Probe of Light Higgsino Dark Matter at the LHC
• Multi-GeV photons from electron-dark matter scattering near Active Galactic Nuclei
• Perspectives for Detection of a Higgsino-like Relic Neutralino
• Dark matter in gravity-mediated supersymmetry breaking