Axino-Neutrino Mixing in Gauge-Mediated Supersymmetry Breaking Models

Details Axino-Neutrino Mixing in Gauge-Mediated Supersymmetry Breaking Models Axino-Neutrino Mixing in Gauge-Mediated Supersymmetry Breaking Models

1999-01-05

arxiv.org/abs/hep-ph/9901220v2

Phys.Lett. B454 (1999) 304-308

Physics

High Energy Physics

High Energy Physics - Phenomenology

Revtex, 7 pp. Version to appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(99)00351-2

When the strong CP problem is solved by spontaneous breaking of an anomalous global symmetry in theories with gauge-mediated supersymmetry breaking, the pseudo Goldstone fermion (the axino) is a good candidate of a light sterile neutrino. Its mixing with neutrinos relevant for current neutrino experiments can arise in the presence of R-parity violation. The realistic four neutrino mass matrix is obtained when the see-saw mechanism is brought in, and an ansatz for the right-handed neutrino mass is constructed.

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