CP violation and Leptogenesis in models with Minimal Lepton Flavour Violation

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dc.creatorCirigliano, Vincenzo
dc.creatorIsidori, Gino
dc.creatorPorretti, Valentina
dc.date2006-07-06
dc.date2006-09-29
dc.date.accessioned2026-07-07T10:25:05Z
dc.date.available2026-07-07T10:25:05Z
dc.descriptionWe 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. For natural values of the free parameters, this mechanism requires a high right-handed neutrino mass scale ($M_ν\gsim 10^{12}$ GeV). By means of a general effective field theory approach, we analyse the impact of the CP violating phases responsible for leptogenesis on the low-energy FCNC observables and derive bounds on the scale of flavour violating new physics interactions. As a result of the high value of the scale of total lepton-number violation, in this class of models the $μ\to eγ$ decay is expected to be close to the present exclusion limit (under the additional assumption of new particles carrying lepton flavour at the TeV scale).
dc.description19 pages, 9 figures; v2: new appendix, added note on hep-ph/0609067, and other minor modifications
dc.identifierhttps://arxiv.org/abs/hep-ph/0607068
dc.identifierhttp://arxiv.org/abs/hep-ph/0607068
dc.identifierNucl.Phys.B763:228-246,2007
dc.identifierdoi:10.1016/j.nuclphysb.2006.11.015
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176420
dc.subjectHigh Energy Physics - Phenomenology
dc.titleCP violation and Leptogenesis in models with Minimal Lepton Flavour Violation
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