Minimal supergravity sneutrino dark matter and inverse seesaw neutrino masses

Abstract

We show that within the inverse seesaw mechanism for generating neutrino masses minimal supergravity is more likely to have a sneutrino as the lightest superparticle than the conventional neutralino. We also demonstrate that such schemes naturally reconcile the small neutrino masses with the correct relic sneutrino dark matter abundance and accessible direct detection rates in nuclear recoil experiments.

4 pages, 4 figures

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• CP Violation and Neutrino Oscillations
• Sneutrino cold dark matter, a new analysis: relic abundance and detection rates
• Decaying warm dark matter and neutrino masses
• X-ray photons from late-decaying majoron dark matter
• Supergravity can reconcile dark matter with lepton number violating neutrino masses

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• Neutrinos as cosmic messengers