6533b831fe1ef96bd1299b9e

RESEARCH PRODUCT

Neutrino Coannihilation on Dark-Matter Relics?

Chris QuiggOlga Mena RequejoGabriela Barenboim

subject

PhysicsNuclear and High Energy PhysicsParticle physicsAstrophysics::High Energy Astrophysical PhenomenaAstrophysics (astro-ph)Dark matterHigh Energy Physics::PhenomenologyGamma rayFOS: Physical sciencesAstrophysicsAstrophysicsLightest Supersymmetric ParticleGalaxyHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics::ExperimentDecay chainNeutrinoResonance effect

description

High-energy neutrinos may resonate with relic background neutralinos to form short-lived sneutrinos. In some circumstances, the decay chain that leads back to the lightest supersymmetric particle would yield few-GeV gamma rays or charged-particle signals. Although resonant coannihilation would occur at an appreciable rate in our galaxy, the signal in any foreseeable detector is unobservably small.

10.1103/physrevd.74.023006http://arxiv.org/abs/astro-ph/0604215