Speaker
Salvador Centelles Chuliá
(IFIC (CSIC - U. Valencia))
Description
In this talk, I explore low-scale seesaw scenarios in which a single global U(1) symmetry — and its spontaneous breaking — plays multiple theoretical roles and determines the resulting phenomenology. I will present four example models that share a similar particle content but differ only in their charge assignments, leading to qualitatively distinct physical scenarios, where the Goldstone boson associated with the U(1) breaking (Majoron or Diracon) plays a central role. I will highlight the complementarity between low-energy flavour experiments and cosmological observations in constraining and distinguishing these models.
Primary author
Salvador Centelles Chuliá
(IFIC (CSIC - U. Valencia))
Co-authors
Mr
Tim Herbermann
(MPIK)
Avelino Vicente
(IFIC (CSIC - U. Valencia))
Mr
Antonio Herrero-Brocal
(IFIC (CSIC - U. Valencia))
