Lepton flavour non-conservation at high energies in a superstring inspired standard model

Bernabéu, J.; Santamaría, Arcadi; Vidal, J. Ruiz; Méndez, A.; Valle, J. W. F.

doi:10.1016/0370-2693(87)91100-2

Cited by 375 publications

(355 citation statements)

References 20 publications

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“…For higher masses the existence of such neutral heavy leptons can at present only be probed through their indirect e ects. For example, if we include mixing between the various generations we h a v e the interesting possibility o f a v our and/or CP violation [19], even in the limit where ! 0, while the isodoublet neutrinos become strictly massless.…”

Section: (A) the Resulting Mass Is Given Bymentioning

confidence: 99%

Invisible Higgs decays and neutrino physics

1993

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A wide class of neutrino physics-motivated models are characterized by the spontaneous violation of a global U(1) lepton number symmetry at or below the electroweak scale by a n SU(2) U(1) singlet vacuum expectation value h i < O (1) TeV. In all these models the main Higgs decay c hannel is likely to be "invisible", e.g. h ! JJ, where J denotes the associated weakly interacting pseudoscalar Goldstone bosonthe majoron. This leads to events with large missing energy that could be observable at LEP and a ect the Higgs mass bounds obtained, as well as lead to novel ways to search for Higgs bosons at high energy supercolliders such as the LHC/SSC.

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Section: (A) the Resulting Mass Is Given Bymentioning

confidence: 99%

Invisible Higgs decays and neutrino physics

1993

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“…In the inverse seesaw, the Standard Model field content is extended by n R generations of right-handed neutrinos ν R and n X generations of singlet fermions X (such that n R + n X = N s ), both with lepton number L = +1 [59,63,94]. The corresponding Lagrangian before EWSB has the form …”

Section: Inverse Seesaw Model and Its Supersymmetric Extensionmentioning

confidence: 99%

Lepton flavor violation in low-scale seesaw models: SUSY and non-SUSY contributions

Abada

Krauss

Porod

et al. 2014

J. High Energ. Phys.

110

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Taking the supersymmetric inverse seesaw mechanism as the explanation for neutrino oscillation data, we investigate charged lepton flavor violation in radiative and 3-body lepton decays as well as in neutrinoless µ − e conversion in muonic atoms. In contrast to former studies, we take into account all possible contributions: supersymmetric as well as non-supersymmetric. We take CMSSM-like boundary conditions for the soft supersymmetry breaking parameters. We find several regions where cancellations between various contributions exist, reducing the lepton flavor violating rates by an order of magnitude compared to the case where only the dominant contribution is taken into account. This is in particular important for the correct interpretation of existing data as well as for estimating the reach of near future experiments where the sensitivity will be improved by one to two orders of magnitude. Moreover, we demonstrate that ratios like BR(τ → 3µ)/BR(τ → µe + e − ) can be used to determine whether the supersymmetric contributions dominate over the W ± and H ± contributions or vice versa.

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“…[10,11]. Moreover, there are loop-induced lepton flavour and CP non-conservation effects whose rates are precisely calculable [7,8,12]. I repeat that this is remarkable due to the fact that physical light neutrinos are massless, as in the Standard Model.…”

Section: Modelsmentioning

confidence: 87%

Neutrinos and physics beyond the standard model

Valle¹

1997

Nuclear Physics B - Proceedings Supplements

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A brief sketch is made of the present observational status of neutrino physics, with emphasis on the hints that follow from solar and atmospheric neutrino observations, as well as cosmological data on the amplitude of primordial density fluctuations. I also briefly review the ways to account for the observed anomalies and some of their implications. A brief sketch is made of the present observational status of neutrino physics, with emphasis on the hints that follow from solar and atmospheric neutrino observations, as well as cosmological data on the amplitude of primordial density fluctuations. I also briefly review the ways to account for the observed anomalies and some of their implications.

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Lepton flavour non-conservation at high energies in a superstring inspired standard model

Cited by 375 publications

References 20 publications

Invisible Higgs decays and neutrino physics

Invisible Higgs decays and neutrino physics

Lepton flavor violation in low-scale seesaw models: SUSY and non-SUSY contributions

Neutrinos and physics beyond the standard model

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