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Göttingen 2012 – scientific programme

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T: Fachverband Teilchenphysik

T 21: Astroteilchenphysik, Kosmologie / Neutrinophysik (Theorie)

T 21.9: Talk

Tuesday, February 28, 2012, 18:45–19:00, VG 3.101

Beyond the SM Δ L = 2 Operators and Neutrinoless Double Beta Decay — •Dominik Neuenfeld, Michael Dürr, and Manfred Lindner — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

Neutrinoless double beta decay is a lepton number violating process (Δ L = 2) whose observation would prove that neutrinos are Majorana particles, i.e. their own antiparticles. The simplest realisation of this process (mediation by light massive Majorana neutrinos) may however interfere with other lepton number violating operators. Therefore, the possibility to reliably extract neutrino parameters from the experimental results may be affected by this interplay. We discuss the effects of various beyond the SM Δ L = 2 processes at higher scales on the measurement of the effective Majorana mass and their implications on different parameters in the neutrino sector.

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