The neutral top-pion and the lepton flavor violating $Z$ decays $Z\to l_i{l}_j$

Abstract

Taking into account the constraints of the present experimental limit of the process $\mu \to e\gamma$ on the free parameters of topcolor-assisted technicolor(TC2) models, we calculate the contributions of the neutral top-pion to the lepton flavor violating(LFV) $Z$ decays $Z\to l_i{l}_j$. Our results show that the value of the branching ratio $Br(Z\to \tau l)$ is larger than that of $Br(Z\to \mu e)$ in all of the parameter space and there is $Br(Z\to \tau \mu )\approx Br(Z\to \tau e)\simeq 2\times 10^{-14}$, which is far from the reach of present or future experiments.

arXiv comment12 pages and 3 figures. To be published in J. Phys. G

References in corpus (22)

• Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
• First Results from KamLAND: Evidence for Reactor Anti-Neutrino Disappearance
• Measurement of the rate of nu_e + d --> p + p + e^- interactions produced by 8B solar neutrinos at the Sudbury Neutrino Observatory
• Solar 8B and hep Neutrino Measurements from 1258 Days of Super-Kamiokande Data
• Measurement of Day and Night Neutrino Energy Spectra at SNO and Constraints on Neutrino Mixing Parameters
• Indications of Neutrino Oscillation in a 250 km Long-baseline Experiment
• Measurements of the Solar Neutrino Flux from Super-Kamiokande's First 300 Days
• Flavor Changing Effects in Theories with a Heavy Z' Boson with Family Non-Universal Couplings
• Top Quark Seesaw Theory of Electroweak Symmetry Breaking
• New Topflavor Models with Seesaw Mechanism
• Charged Lepton Flavour Violation from Massive Neutrinos in Z Decays
• A Heavy Top Quark From Flavor-Universal Colorons
• On Unitarity Based Relations Between Various Lepton Family Violating Processes
• Lepton Flavor Violating Z Decays in the Zee Model
• Determining the Chirality of Yukawa Couplings via Single Charged Higgs Boson Production in Polarized Photon Collision
• Flavour Universal Dynamical Electroweak Symmetry Breaking
• Lepton Flavor Violation in Z and Lepton Decays in Supersymmetric Models
• Effective Lagrangian description of the lepton flavor violating decays Z-->li lj
• Lepton flavor violating $Z\to l_1^{+}{l}_2^{-}$ decay in the general two Higgs Doublet model
• Lepton flavor violating $Z\to l_i{l}_j$ in flavor-universal topcolor-assisted technicolor
• Detecting the neutral top-pion at future muon colliders
• Neutral top-pion and lepton flavor violating processes

Cited by in corpus (7)

• Associated production of the top-pions and single top at hadron colliders
• Lepton flavour violating processes at the International Linear Collider
• Leptonic $Z$ decays in the littlest $Higgs$ model with T-parity
• Lepton flavor violating Z boson decays induced by scalar unparticle
• Lepton flavor violating Z->l_1^+ l_2^- decay in the split fermion scenario in the two Higgs Doublet model
• Lepton flavor violating $Z\to l_1^{+}{l}_2^{-}$ decay in the general two Higgs Doublet model with the inclusion of non-universal extra dimensions
• Lepton flavor violating signals of the neutral top-pion in future lepton colliders