TL;DR
This paper proposes a model where the light gravitino mixes with neutrinos in low energy SUSY breaking, compatible with experimental and cosmological constraints, potentially impacting neutrino physics and cosmology.
Contribution
It introduces a novel mixing mechanism between gravitino and neutrinos via R-parity violation, aligning with experimental data and cosmological bounds.
Findings
Mixing angles compatible with neutrino experiments
Cosmological bounds on bilinear terms are satisfied
Potential implications for neutrino and cosmological models
Abstract
A scheme is described in which the light gravitino in low energy SUSY breaking models mixes with neutrinos. The mixing between gravitino and neutrinos arises through the standard model symmetry breaking and an R-parity and lepton number violating bilinear term in the superpotential. It is shown that mixings compatible with the neutrino experiments can be obtained within the cosmological bound on the bilinear term set by the baryon asymmetry of the universe.
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Taxonomy
TopicsCosmology and Gravitation Theories · Particle physics theoretical and experimental studies · Black Holes and Theoretical Physics