Göttingen 2012 – scientific programme

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T: Fachverband Teilchenphysik

T 21: Astroteilchenphysik, Kosmologie / Neutrinophysik (Theorie)

T 21.5: Talk

Tuesday, February 28, 2012, 17:45–18:00, VG 3.101

Direct Detection of Dark Matter in Radiative Seesaw Model — •Daniel Schmidt¹, Thomas Schwetz¹, and Takashi Toma² — ¹Max-Planck-Institut fuer Kernphysik, Heidelberg — ²Institute for Theoretical Physics, Kanazawa University, Japan

In the radiative seesaw model proposed by Ma, we assume that the lightest right-handed neutrino is the Dark Matter candidate and almost degenerated with the second lightest right-handed neutrino. Thus, elastic Dark Matter-nucleus scattering is suppressed. Inelastic scattering is induced by a lepton-loop coupled to the photon. Effectively, there are charge-charge, dipole-charge and dipole-dipole interactions. We present the event rate of the model and compare it with existing data. Moreover, monochromatic photons from the decay of the excited Dark Matter state are discussed.