1104.1387 (Joydeep Chakrabortty et al.)

Resonant Leptogenesis with nonholomorphic R-Parity violation and LHC
Phenomenology    [PDF]

Joydeep Chakrabortty, Sourov Roy

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.

View original: http://arxiv.org/abs/1104.1387