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Karlsruhe 2011 – scientific programme

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T: Fachverband Teilchenphysik

T 20: Neutrinophysik (Theorie)

T 20.5: Talk

Monday, March 28, 2011, 17:45–18:00, 30.23: 3-1

Constraints on fourth generation Majorana neutrinos — •Dario Schalla1, Heinrich Päs1, and Alexander Lenz21Department of Physics, TU Dortmund, D-44221 Dortmund, Germany — 2Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany

We investigate the possibility of a fourth sequential generation in the lepton sector. Assuming neutrinos to be Majorana particles and starting from a recent - albeit weak - evidence for a non-zero admixture of a fourth generation neutrino from fits to weak lepton and meson decays we discuss constraints from neutrinoless double beta decay, radiative lepton decay and like-sign dilepton production at hadron colliders.

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