6533b7ddfe1ef96bd127544e

RESEARCH PRODUCT

New Supernova Constraints on active-sterile neutrino conversions

S. PastorV.b. SemikozJ.w.f. Valle

subject

PhysicsParticle physicsSterile neutrinoMagnetic momentPhysics::Instrumentation and DetectorsAstrophysics::High Energy Astrophysical PhenomenaIsotropyHigh Energy Physics::PhenomenologyFísicaFOS: Physical sciencesAstronomy and AstrophysicsMagnetic fieldSupernovaMagnetizationHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics::ExperimentNeutrinoParticle Physics - Phenomenology

description

We consider active-sterile neutrino conversions in a supernova in the presence of random magnetic field domains. For large enough fields the magnetization of the medium may enhance the active to sterile neutrino conversion rates. Neglecting neutrino transition magnetic moments we show that for KeV neutrino mass squared differences these limits may overcome those that would apply in the isotropic case.

10.1016/0927-6505(94)00029-3http://arxiv.org/abs/hep-ph/9404299