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Dresden 2013 – scientific programme

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T: Fachverband Teilchenphysik

T 20: Neutrinophysik (Theorie)

T 20.1: Talk

Tuesday, March 5, 2013, 16:45–17:00, WIL-B122

Lepton number and lepton flavour violation in left-right symmetric theories — •James Barry — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

Neutrinoless double beta decay is a lepton number violating process, which, if observed, would prove that neutrinos are Majorana particles. New physics beyond the standard model is required to make the process observable, and there are several different theoretical frameworks that could provide the necessary operators. In the left-right symmetric model there are a number of contributions, either from right-handed neutrinos or Higgs triplets, with the rate for double beta decay linked to neutrino mass. In this context we investigate the different double beta decay amplitudes in different regions of the seesaw parameter space, i.e., with either type I, type II or type I+II seesaw, paying particular attention to the relevant constraints from lepton flavour violation and collider searches. In addition, we discuss the observability of the inverse process eeWLWR at a linear collider.

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