New parametrization of the seesaw mechanism and applications in supersymmetric models
By John Ellis, J. Hisano, M. Raidal, Y. Shimizu. 2002
187 citations recorded by the source corpus.
We present a new parametrization of the minimal seesaw model, expressing the heavy-singlet neutrino Dirac Yukawa couplings (Y n) ij and Majorana masses MNi in terms of effective light-neutrino observables and an auxiliary Hermitian matrix H. In the minimal supersymmetric version of the seesaw model, the latter can be related directly to other low-energy observables, including processes that violate charged lepton flavor and CP . This parametrization enables one to respect the stringent constraints on muon-number violation while studying the possible ranges for other observables by scanning over the allowed parameter space of the model. Conversely, if any of the lepton-flavor-violating process is observed, this measurement can be used directly to constrain ( Y n) ij and MN i . As applications, we study flavor-violating t decays and the electric dipole moments of leptons in the minimal supersymmetric seesaw model.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/e55749174a2b4eebaa7ebf0d2eb6c89c9145b43b
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In Nuclear and High Energy Physics
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Citations in the corpus
- Patterns of flavour violation in the presence of a fourth generation of quarks and leptons (2010, methodology): “Table 3: Comparison of various ratios of branching ratios in the LHT model [55], the MSSM without [63, 64] and with significant Higgs contributions [65, 66] and the SM4 calculated here.”
- Physics at Super B Factory (2004, unknown): “While a natural candidate for the largest LFV τ lepton decay mode is τ− → μ−γ from the atmospheric neutrino result, some model-parameters in the seesaw model predict larger Br(τ− → e−γ) [225].”
- Flavor structures of charged fermions and massive neutrinos (2019, methodology): “If one goes beyond the SM framework by incorporating the seesaw scenarios with some supersymmetric theories, for example, it will certainly be possible to achieve much richer phenomenology of lepton flavor violation in the charged-lepton sector [605, 619, 622, 623, 624, 625, 626, 627, 628, 629, 630,”