Feb 18 – 26, 2021
Europe/Rome timezone

Minimal scoto-seesaw mechanism for neutrino masses with spontaneous CP violation

Feb 19, 2021, 5:30 PM
Room 3 (https://unipd.link/NeuTel-ParallelRoom3)

Room 3


Parallel Contributed Talk Neutrino Theory and Cosmology Non Standard Interactions


D. Barreiros (CFTP/IST, U.Lisboa)


I will discuss our recent work on a simple scoto-seesaw model that accounts for dark matter and neutrino masses with spontaneous CP violation. This is achieved with a single horizontal $\mathcal{Z}_8$ discrete symmetry, broken to a residual $\mathcal{Z}_2$ subgroup responsible for stabilizing dark matter. CP is broken spontaneously via the complex vacuum expectation value of a scalar singlet, inducing leptonic CP-violating effects. We find that the imposed $\mathcal{Z}_8$ symmetry pushes the values of the Dirac CP phase and the lightest neutrino mass to ranges already probed by ongoing experiments.

Primary authors

D. Barreiros (CFTP/IST, U.Lisboa) F. Joaquim (CFTP/IST, U. Lisboa) R. Srivastava (Indian Institute of Science Education and Research) J. Valle (Institut de Física Corpuscular – C.S.I.C./Universitat de Valencia)

Presentation materials