20-24 May 2013
Europe/Berlin timezone
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Bonn - Seminar Room BCTP

A predictive scheme for triplet leptogenesis


  • Benoit SCHMAUCH


I present a model of baryogenesis through leptogenesis, inspired from arXiv:0804.0801, in which a lepton asymmetry is generated by the CP-violating decay of an electroweak scalar triplet. This triplet also gives rise to neutrino Majorana masses through the type II seesaw mechanism. Therefore, there is a very direct link between the CP asymmetry and neutrino parameters, which are already known or could be measured by future experiments. I study the impact of flavor effects and compute the final baryon asymmetry predicted by the model. In particular, the final baryon asymmetry strongly depends on the mixing angle theta_13. The value measured by the Daya Bay experiment is in the right ballpark to account for the observed baryon-to-photon ratio.