Sterile neutrinos and indirect dark matter searches in IceCube

Details Sterile neutrinos and indirect dark matter searches in IceCube Sterile neutrinos and indirect dark matter searches in IceCube

Publishing date

2012-02-15

URL

arxiv.org/abs/1202.3431v2

Science

Physics

Field

High Energy Physics

SubField

High Energy Physics - Phenomenology

Additional info

13 pages, 5 figures; v2: minor corrections and improvements to numerical results, added section about dependence of IceCube li

Type

Scientific paper

Abstract

If light sterile neutrinos exist and mix with the active neutrino flavors, this mixing will affect the propagation of high-energy neutrinos from dark matter annihilation in the Sun. In particular, new Mikheyev-Smirnov-Wolfenstein resonances can occur, leading to almost complete conversion of some active neutrino flavors into sterile states. We demonstrate how this can weaken IceCube limits on neutrino capture and annihilation in the Sun and how potential future conflicts between IceCube constraints and direct detection or collider data might be resolved by invoking sterile neutrinos. We also point out that, if the dark matter--nucleon scattering cross section and the allowed annihilation channels are precisely measured in direct detection and collider experiments in the future, IceCube can be used to constrain sterile neutrino models using neutrinos from the dark matter annihilation.

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