Portoroz 2015: Particle Phenomenology From the Early Universe to High Energy Colliders

Session

Neutrinos

9 Apr 2015, 16:30

James Cook (Portoroz, Slovenia)

10. Neutrinoless Double Beta Decay and Particle Physics

Werner Rodejohann (MPIK, Heidelberg)

09/04/2015, 16:30

Planary Talk

Physics implications of neutrinoless double beta decay are summarized. Both the standard approach of light neutrino exchange as well as non-standard interpretations in terms of TeV scale physics will be discussed. Tests of the mechanisms at colliders and with lepton flavor violation are presented. It is pointed out that left-right symmetric mechanisms can have testable consequences also in...

19. Neutrino R\nuMDM-Mass-Model at Three-Loop Level

Prof. Ivica Picek (University in Zagreb)

09/04/2015, 16:53

Planary Talk

We propose a three-loop radiative neutrino (R\nu) mass model realized with BSM fields, including minimal-dark-matter (MDM) candidates. These, in conjunction with the 2HDM fields on top of which the model is built, lead to an accidental Z_2 symmetry protecting the fermion quintuplet as a DM candidate. We assess the potential fingerprints of the Majorana quintuplet on present and future pp colliders.

40. Two-loop induced neutrino masses: A model-independent approach

Diego Aristizabal (Universite de Liege)

09/04/2015, 17:16

Planary Talk

Majorana neutrino masses can originate either at the tree level (type-I, II or III seesaws) or can be radiatively induced. The latter option naturally requires order TeV BSM fields, thus leading to testable neutrino mass generation mechanisms. Based on a two-loop systematic classification of the dimension five effective Weinberg operator, in this talk I will discuss the different...

20. The impact of flavour on scalar triplet leptogenesis

Benoit Schmauch (IPhT)

09/04/2015, 17:39

Planary Talk

Leptogenesis is an appealing framework to explain the baryon asymmetry of the universe. In its standard realization involving right-handed neutrinos, it has been shown that, if right-handed neutrinos are hierarchical, the flavour structure of Boltzmann equations describing the evolution of the lepton asymmetry simplifies a lot. When the charged lepton Yukawa are negligible, that is when the...