Karlsruhe 2011 – scientific programme

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T: Fachverband Teilchenphysik

T 21: Neutrinophysik / Astroteilchenphysik und Kosmologie (Theorie)

T 21.4: Talk

Tuesday, March 29, 2011, 17:30–17:45, 30.23: 3-1

Sommerfeld enhancements in sneutrino Dark Matter annihilation — •Laura van den Aarssen, Torsten Bringmann, and Mitsuru Kakizaki — II. Institut für Theoretische Physik, Universität Hamburg, Deutschland

A natural extension of the MSSM consists of introducing Dirac neutrino masses and provides us with an interesting scalar Dark Matter (DM) candidate: a left-right mixed sneutrino. We have studied the properties of sneutrino DM, mainly focusing on the prospects for indirect DM detection. Since the parameter space allows for a (multi-)TeV scale DM candidate, it is important to take into account Sommerfeld effects which is a generic mechanism in the annihilation of heavy dark matter particles that can boost the annihilation cross-section by the repeated exchange of virtual particles. In this talk I will summarize our results for sneutrino DM, paying special attention to the effect of Sommerfeld enhancements in this particular model.