CP violation and leptogenesis in models with minimal lepton flavour violation

Creators: Cirigliano, Vincenzo; Isidori, Gino; Porretti, Valentina

Abstract

We investigate the viability of leptogenesis in models with three heavy right-handed neutrinos, where the charged-lepton and the neutrino Yukawa couplings are the only irreducible sources of lepton-flavour symmetry breaking (minimal lepton flavour violation hypothesis). We show that in this framework a specific type of resonant leptogenesis can be successfully accomplished, whose distinctive feature is the raise of the baryon asymmetry with the mass scale of right-handed neutrinos for M_

Additional Information

© 2006 Elsevier. Received 25 July 2006, Revised 1 November 2006, Accepted 13 November 2006, Available online 4 December 2006. We thank Thomas Hambye for pointing our attention on Ref. [11] and for useful discussions. We also thank Ben Grinstein, Serguey Petcov and Mark Wise for useful comments. The work of VC was carried out under the auspices of the National Nuclear Security Administration of the U.S. Department of Energy at Los Alamos National Laboratory under Contract No. DE-AC52-06NA25396.

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