IFIC Seminar: Resonant leptogenesis in (2,2) inverse see-saw realisation

por Dr. Tripurari Srivastava (University of Delhi)

martes 18 jul. 2023 12:00 → 13:00 Europe/Andorra

4-4-4426 - Seminari Física Teòrica (Campus Burjassot)

Leptogenesis provides an explanation to the baryon asymmetry observed in the Universe. In this talk, I will present a minimal scenario that extends the Standard Model by incorporating two right-handed (RH) neutrinos and two singlet neutral fermions. This augmentation allows for the generation of active neutrino masses through the (2,2) inverse seesaw mechanism. The framework will be examined in the context of neutrino oscillation data and experimental constraints arising from lepton flavor violating (LFV) decays, namely μ→eγ, τ→eγ, and τ→μγ. Furthermore, this study delves into the potential of generating the baryon asymmetry of the universe through resonant leptogenesis. The resonant leptogenesis mechanism is induced by the presence of the lightest pair of degenerate mass eigenstates. Phenomenological aspects of the model will be analyzed, and a selection of benchmark points from the parameter space with TeV scale heavy neutrinos will be investigated. This model can be tested in the future collider. I will present prospects of the framework in the context of the proposed muon collider.