Dr. Miha Nemevšek: Majorana neutrinos, Left-Right symmetry and the LHC
Povzetek:
Majorana neutrinos, Left-Right symmetry and the LHC
Dr. Miha Nemevšek, Institut "Jožef Stefan", Ljubljana in SISSA, Trst
Masses of most elementary particles seem to have a dynamical origin from spontaneous electroweak symmetry breaking, mechanism which is now probed by measurements of Higgs boson decays. Neutrino mass remains a mystery of particle physics, in particular its Majorana nature. A natural place for Majorana neutrinos are Left-Right symmetric theories, where the necessary presence of heavy neutrinos explains the smallness of neutrino mass via the see-saw mechanism.
Possible ways of searching for heavy Majorana neutrino signals are discussed in the context of Left-Right symmetry with a focus on direct searches at the LHC. Complementary role of neutrino-less double beta decay in search for lepton number violation is highlighted. Finally, a recent connection between Majorana and Dirac masses of neutrinos in Left-Right symmetric theories is explained and its phenomenological impact demonstrated on processes at LHC and electric dipole moment of the electron.
