6533b7d6fe1ef96bd1265b0a
RESEARCH PRODUCT
Gravitino dark matter and neutrino masses with bilinear R-parity violation
Marco TaosoÓScar ZapataDiego RestrepoJosé W. F. Vallesubject
Nuclear and High Energy PhysicsParticle physicsPhotonAstrophysics::High Energy Astrophysical PhenomenaDark matterFOS: Physical sciencesMasas de neutrinos01 natural sciencesNuclear physicsHigh Energy Physics - Phenomenology (hep-ph)R-paridad bilinealR-parity0103 physical sciences010306 general physicsNeutrino oscillationLine (formation)PhysicsLarge Hadron Collider010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyFísicaHigh Energy Physics - PhenomenologyGravitinoHigh Energy Physics::ExperimentNeutrinoGravitinodescription
Bilinear R-parity violation provides an attractive origin for neutrino masses and mixings. In such schemes the gravitino is a viable decaying dark matter particle whose R-parity violating decays lead to monochromatic photons with rates accessible to astrophysical observations. We determine the parameter region allowed by gamma-ray line searches, dark matter relic abundance and neutrino oscillation data, obtaining a limit on the gravitino mass $m_{\tilde G} \lsim$ 1-10 GeV corresponding to a relatively low reheat temperature $T_R \lsim$ few $\times 10^7-10^8$ GeV. Neutrino mass and mixing parameters may be reconstructed at accelerator experiments like the Large Hadron Collider.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-09-02 |