LFV radiative Decays and Leptogenesis in the SUSY seesaw model

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dc.creatorPetcov, S. T.
dc.creatorShindou, T.
dc.date2006-05-18
dc.date2006-05-29
dc.date.accessioned2026-07-07T07:13:19Z
dc.date.available2026-07-07T07:13:19Z
dc.descriptionThe lepton flavour violating charged lepton decays mu to e + gamma and thermal leptogenesis are analysed in the minimal supersymmetric standard model with see-saw mechanism of neutrino mass generation and soft supersymmetry breaking terms with universal boundary conditions. Hierarchical spectrum of heavy Majorana neutrino masses, M_1 << M_2 << M_3, is considered. In this scenario, the requirement of successful thermal leptogenesis implies a lower bound on M_1. For the natural GUT values of the heaviest right-handed Majorana neutrino mass, M_3 > 5 times 10^{13} GeV, and supersymmetry particle masses in the few times 100 GeV range, the predicted mu to e + gamma decay rate exceeds by few order of magnitude the experimental upper limit. This problem is avoided if the matrix of neutrino Yukawa couplings has a specific structure. The latter leads to a correlation between the baryon asymmetry of the Universe predicted by leptogenesis, BR(mu to e + gamma) and the effective Majorana mass in neutrinoless double beta decay.
dc.description4 pages, 2 figures, improvements on the text, talk at the XLIst Rencontres de Moriond, Electroweak Interactions and Unified Theories, La Thuile, Italy, 11-18 March 2006
dc.identifierhttps://arxiv.org/abs/hep-ph/0605204
dc.identifierhttp://arxiv.org/abs/hep-ph/0605204
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/112411
dc.subjectHigh Energy Physics - Phenomenology
dc.titleLFV radiative Decays and Leptogenesis in the SUSY seesaw model
dc.typetext

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