Resonant Leptogenesis with nonholomorphic R-Parity violation and LHC Phenomenology

Details Resonant Leptogenesis with nonholomorphic R-Parity violation and LHC Phenomenology Resonant Leptogenesis with nonholomorphic R-Parity violation and LHC Phenomenology

2011-04-07

arxiv.org/abs/1104.1387v2

Phys. Rev. D 85, 035014 (2012)

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 7 figures, Numerical results are improved and new plots are added, Journal version. arXiv admin note: text overlap w

Scientific paper

10.1103/PhysRevD.85.035014

In R-parity violating supersymmetric models both leptogenesis and the correct neutrino masses are hard to achieve together. The presence of certain soft nonholomorphic R-parity violating terms helps to resolve this problem. We consider a scenario where the lightest and the second-lightest neutralino are nearly degenerate in mass and enough CP-asymmetry can be produced through resonant leptogenesis. In this model, the lighter chargino and the lightest neutralino are highly degenerate. We have relatively lighter gauginos which can be produced at the LHC leading to heavily ionizing charged tracks. At the same time this model can also generate the correct neutrino mass scale. Thus our scenario is phenomenologically rich and testable at colliders.

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