Karlsruhe 2011 – scientific programme

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T: Fachverband Teilchenphysik

T 21: Neutrinophysik / Astroteilchenphysik und Kosmologie (Theorie)

T 21.5: Talk

Tuesday, March 29, 2011, 17:45–18:00, 30.23: 3-1

Neutrinos and Dark Matter Within an Extended Zee-Babu Model — •Daniel Schmidt and Thomas Schwetz-Mangold — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

The two main problems of astroparticle physics can be summarized by the statement Neutrinos have mass and the universe has dark matter. Our aim is to juggle both of these shortcomings of the standard model within one theory. Therefore, we start with the Zee-Babu model for generating light neutrino masses and add a complex scalar singlet ϕ and right-handed Majorana neutrinos N_R to its particle content. Containing ϕ, the model enjoys a lepton number symmetry. N_R is the candidate for particle dark matter. Spontaneous breaking of the lepton number symmetry generates neutrino masses. Thus we have found a common energy scale for light neutrino masses and the mass of dark matter.