Dresden 2013 – scientific programme

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SYUM: Symposium Ursprung der Masse

SYUM 1: Ursprung der Masse

SYUM 1.3: Plenary Talk

Wednesday, March 6, 2013, 15:10–15:45, HSZ-01/02

Majorana-Masses of Neutrinos: Origin and Phenomenology — •Werner Rodejohann — MPIK, Heidelberg

The vast majority of theories beyond the Standard Model predicts neutrinos to be Majorana particles. The seesaw mechanism and its variants are presented as generic examples. Neutrinoless double beta decay is the only realistic possibility to prove the Majorana nature of neutrinos. The expected half-lives can be partly constrained through the observed neutrino oscillations. In addition, the decay is a method to measure neutrino mass, complementary to other experiments like KATRIN or cosmological observations. However, there is a number of theories beyond the Standard Model which can also cause double beta decay, but are not directly connected to neutrino physics. These alternatives have often consequences for LHC physics and lepton flavor violation, and can be tested by these means.