Conveners
Parallel Session PII.8
- Salvador Centelles Chulia (Max-Planck-Institut für Kernphysik)
The framework of TeV scale gravity theories was originally invented to solve the hierarchy problem. One specific BSM model is the Many Species Theory in which the scale of quantum gravity gets lowered by the existence of many additional light states. In this talk, we want to present how small neutrino masses can be generated in this infrared approach and how this modifies the oscillation...
We discuss Charged Lepton Flavour Violating (CLFV) signals in inverse seesaw scenarios with 3+3 heavy sterile states and flavour and CP symmetries. In this framework the heavy sterile states are (almost) degenerate in mass, while the flavour structure of the neutrino Yukawa coupling is non-trivial. Different lepton mixing patterns are predicted depending on the choice of residual groups...
We discuss the thermal leptogenesis mechanism within the minimal gauged U(1)$_{L_\mu-L_\tau}$ model to explain the observed baryon asymmetry of the Universe (BAU). In such framework, the phases of the Pontecorvo–Maki–Nakagawa–Sakata neutrino mixing matrix and the sum of the Standard Model neutrino masses are predictable because of a restricted neutrino mass matrix structure. Additionally, in...
The main limitation for pre-inflationary breaking of Peccei-Quinn (PQ) symmetry is the upper bound on the Hubble rate during inflation from axion isocurvature fluctuations. This leads to a tension between high scale inflation and QCD axions with Grand Unified Theory (GUT) scale decay constants, which reduces the potential for a detection of tensor modes at next generation CMB experiments. We...
In this talk, we investigate the interplay between the observation of lepton number violating processes and the generation of the baryon asymmetry of the Universe via low-scale leptogenesis. We focus on the impact of non-standard interactions, beyond the usual Majorana mass term, on the observation of neutrinoless double beta decay and the resulting parameter space for successful leptogenesis....
