Resonant Leptogenesis with nonholomorphic R-Parity violation and LHC Phenomenology

TL;DR

This paper proposes a supersymmetric model with nonholomorphic R-parity violation that enables resonant leptogenesis and neutrino mass generation, predicting collider signatures like degenerate gauginos and ionizing tracks.

Contribution

It introduces a novel scenario combining resonant leptogenesis with neutrino mass generation using nonholomorphic R-parity violation, with distinctive collider phenomenology.

Findings

Degenerate neutralinos enable resonant leptogenesis.

Model predicts detectable charged tracks at the LHC.

Consistent neutrino mass scale achieved.

Abstract

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.