scholarly journals Lepton-flavor violation via right-handed neutrino Yukawa couplings in the supersymmetric standard model

1996 ◽  
Vol 53 (5) ◽  
pp. 2442-2459 ◽  
Author(s):  
J. Hisano ◽  
T. Moroi ◽  
K. Tobe ◽  
M. Yamaguchi
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Lepton Flavor Violation ◽  
Yukawa Couplings ◽  
Lepton Flavor ◽  
Flavor Violation

scholarly journals Lepton-flavor violation in the supersymmetric standard model with seesaw-induced neutrino masses

1995 ◽  
Vol 357 (4) ◽  
pp. 579-587 ◽  
Author(s):  
J. Hisano ◽  
T. Moroi ◽  
K. Tobe ◽  
M. Yamaguchi ◽  
T. Yanagida
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Neutrino Masses ◽  
Lepton Flavor Violation ◽  
Lepton Flavor ◽  
Flavor Violation

scholarly journals lα → 3lβ in minimal R-symmetric supersymmetric Standard Model

2019 ◽  
Vol 35 (04) ◽  
pp. 1950359
Author(s):  
Ke-Sheng Sun ◽  
Jian-Bin Chen ◽  
Hai-Bin Zhang ◽  
Sheng-Kai Cui
Keyword(s):  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Mass Matrix ◽  
Research Field ◽  
Beyond The Standard Model ◽  
Lepton Flavor Violation ◽  
Decay Channels ◽  
Lepton Flavor ◽  
Flavor Violation ◽  
Theoretical Predictions

Lepton flavor violation decays are channels which may lead to fundamental discoveries in the forthcoming years and this makes it an exciting research field for beyond the Standard Model (SM) searches. In this work, we present an analysis of the lepton flavor violation decays [Formula: see text] in Minimal R-symmetric Supersymmetric Standard Model. The prediction for [Formula: see text] depends on the off-diagonal entries of the slepton mass matrix. The contributions to Wilson coefficients can be classified into Higgs penguins, photon penguins, Z penguins and box diagrams. It shows the contribution from Z penguins dominates the predictions for [Formula: see text], and the contributions from Higgs penguins and box diagrams play different roles in different decay channels. The theoretical predictions for [Formula: see text] can reach the future experimental limits, and the channels are very promising to be observed in near future experiment.

scholarly journals Searching for charged lepton flavor violation at ep colliders

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Stefan Antusch ◽  
A. Hammad ◽  
Ahmed Rashed
Keyword(s):  
Standard Model ◽  
Charged Lepton ◽  
Neutral Current ◽  
Effective Theory ◽  
Theory Approach ◽  
Lepton Flavor Violation ◽  
Lepton Flavor ◽  
Flavor Violation ◽  
The Standard Model ◽  
Order Of Magnitude

Abstract We investigate the sensitivity of electron-proton (ep) colliders for charged lepton flavor violation (cLFV) in an effective theory approach, considering a general effective Lagrangian for the conversion of an electron into a muon or a tau via the effective coupling to a neutral gauge boson or a neutral scalar field. For the photon, the Z boson and the Higgs particle of the Standard Model, we present the sensitivities of the LHeC for the coefficients of the effective operators, calculated from an analysis at the reconstructed level. As an example model where such flavor changing neutral current (FCNC) operators are generated at loop level, we consider the extension of the Standard Model by sterile neutrinos. We show that the LHeC could already probe the LFV conversion of an electron into a muon beyond the current experimental bounds, and could reach more than an order of magnitude higher sensitivity than the present limits for LFV conversion of an electron into a tau. We discuss that the high sensitivities are possible because the converted charged lepton is dominantly emitted in the backward direction, enabling an efficient separation of the signal from the background.

Supersymmetric Lepton Flavor Violation, the Muon Anomalous Magnetic Moment, and e- e- Colliders

2003 ◽  
Vol 18 (16) ◽  
pp. 2769-2778
Author(s):  
Graham D. Kribs
Keyword(s):  
Standard Model ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
International Workshop ◽  
Lepton Flavor Violation ◽  
Muon Anomalous Magnetic Moment ◽  
Lepton Flavor ◽  
Flavor Violation ◽  
Central Value ◽  
The Standard Model

I explain the theoretical connection between lepton flavor violation and muon g - 2 in supersymmetry1. Given any central value deviation of muon g - 2 from the standard model that is assumed to be due to weak scale supersymmetry, I show that stringent bounds on lepton flavor violating scalar masses can be extracted. These bounds are essentially independent of supersymmetric parameter space. I then briefly compare this indirect handle on supersymmetric lepton flavor violation with direct observation at a future lepton collider operating in the e- e- mode. This is a summary of a talk given at e- e-01: 4th International Workshop on Electron-Electron Interactions at TeV Energies.

scholarly journals THEORETICAL OVERVIEW ON TAU PHYSICS

2006 ◽  
Vol 21 (27) ◽  
pp. 5652-5659 ◽  
Author(s):  
ANTONIO PICH
Keyword(s):  
Standard Model ◽  
Present Status ◽  
Model Structure ◽  
Lepton Flavor Violation ◽  
Lepton Flavor ◽  
Flavor Violation ◽  
Lepton Universality ◽  
The Standard Model ◽  
Theoretical Overview

Precise measurements of the τ lepton properties provide stringent tests of the Standard Model structure and accurate determinations of its parameters. We overview the present status of a few selected topics: lepton universality, QCD tests and the determination of αs, msand |Vus| from hadronic τ decays, and lepton flavor violation phenomena.

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