Jan 10 – 14, 2022
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Europe/London timezone

Dark matter as the origin of neutrino mass in the inverse seesaw mechanism

Jan 12, 2022, 12:00 PM
20m
Online only

Online only

Parallel session talk Beyond the Standard Model Beyond the Standard Model

Speaker

Dr Sanjoy Mandal (IFIC, University of Valencia)

Description

We propose that neutrino masses are "seeded'' by a dark sector within the inverse seesaw mechanism. The simplest way to have a ``dark sector'' as origin for neutrino masses in such inverse seesaw mechanism is to postulate the existence of an extra dark fermion $f$, as well as a new complex dark scalar $\xi$. This way we have a new, "hidden'', variant of the scotogenic scenario for radiative neutrino masses. We discuss both explicit and dynamical lepton number violation. In the case of dynamical breaking of lepton number, we need one extra complex scalar which further implies the existence of a massless majoron. In addition to invisible Higgs decays with majoron emission, we discuss in detail the pheneomenolgy of scalar dark matter $\xi$, as well as the novel features associated to charged lepton flavour violation, and neutrino physics.

Primary authors

Prof. Jose WF Valle (AHEP Group at IFIC, CSIC- U Valencia) Dr Sanjoy Mandal (IFIC, University of Valencia) Dr Nicolas Rojas Dr Rahul Srivastava (Department of Physics, Indian Institute of Science Education and Research - Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, India)

Presentation materials