Leptonic Flavor-changing Z0 Decays in SU(2)xU(1) Theories with Right- handed Neutrinos

Abstract

We analyze possible lepton-flavor-violating decays of the $Z^0$ particle in a minimal extension of the Standard Model, in which one right-handed neutral field for each family has been introduced. Such rare leptonic decays are induced by Majorana neutrinos at the first electroweak loop level and are generally not suppressed by the ordinary "see-saw" mechanism. In particular, we find that experimental bounds on branching ratios of the order of $10^{-5}-10^{-6}$ attainable at $LEP$ may impose constraints on lepton-flavor-mixing parameters and the masses of the heavy Majorana neutrinos.

11 pages(2 Figs not included), LaTeX, MZ-TH/92-49

References in corpus (1)

• Radiatively Induced Neutrino Masses and Large Higgs-Neutrino Couplings in the Standard Model with Majorana Fields

Cited by in corpus (71)

• Resonant Leptogenesis
• CP Violation and Baryogenesis due to Heavy Majorana Neutrinos
• Electroweak-Scale Resonant Leptogenesis
• Distinguishing seesaw models at LHC with multi-lepton signals
• Flavour-Violating Charged Lepton Decays in Seesaw-Type Models
• Dynamical Left-Right Symmetry Breaking
• Heavy Majorana Neutrinos and Baryogenesis
• Leptonic CP violation
• Probing Lepton Number Violation via Majorana Neutrinos at Hadron Supercolliders
• The Minimal Scale Invariant Extension of the Standard Model
• Charged Lepton Flavour Violation from Massive Neutrinos in Z Decays
• Lepton Flavor Violation in the Standard Model Extended by Heavy Singlet Dirac Neutrinos
• Indirect searches for sterile neutrinos at a high-luminosity Z-factory
• Resonant CP Violation due to Heavy Neutrinos at the LHC
• Testing non-unitarity of neutrino mixing matrices at neutrino factories
• Mixing Renormalization in Majorana Neutrino Theories
• Multi-Lepton Collider Signatures of Heavy Dirac and Majorana Neutrinos
• Cumulative Non-Decoupling Effects of Kaluza-Klein Neutrinos in Electroweak Processes
• Effective Majorana mass matrix from tau and pseudoscalar meson lepton number violating decays
• Low-scale leptogenesis with three heavy neutrinos
• Charged Lepton Flavour Violation in Supersymmetric Low-Scale Seesaw Models
• The Little Review on Leptogenesis
• Universality-Breaking Effects in Leptonic Z Decays
• Astrophysical and Terrestrial Constraints on Singlet Majoron Models
• Soft lepton-flavor violation in a multi-Higgs-doublet seesaw model
• Impact of sterile neutrinos on nuclear-assisted cLFV processes
• Neutrino physics at large colliders
• Neutrino masses, leptogenesis and dark matter from small lepton number violation?
• Lepton flavor violating Z decays: A promising window to low scale seesaw neutrinos
• l W nu production at CLIC: a window to TeV scale non-decoupled neutrinos
• Electroweak Resonant Leptogenesis in the Singlet Majoron Model
• SEMILEPTONIC LEPTON-NUMBER/FLAVOUR-VIOLATING tau DECAYS IN MAJORANA NEUTRINO MODELS
• Flavour and polarisation in heavy neutrino production at e+ e- colliders
• Gauge and Scheme Dependence of Mixing Matrix Renormalization
• Electric Dipole Moments of Charged Leptons with Sterile Fermions
• Probing Lepton-number/flavour-violation in Semileptonic Tau Decays into Two Mesons
• Supersymmetric Lepton Flavour Violation in Low-Scale Seesaw Models
• In-flight cLFV conversion: $e-\mu$, $e-\tau$ and $\mu -\tau$ in minimal extensions of the Standard Model with sterile fermions
• Heavy Majorana Neutrino Production at e- gamma Colliders
• Charged lepton Flavor Violation in Supersymmetry with Bilinear R-Parity Violation
• Lepton Flavour Violating top decays at the LHC
• Effective Lagrangian description of the lepton flavor violating decays Z-->li lj
• CONFRONTING LEFT-RIGHT SYMMETRIC MODELS WITH ELECTROWEAK PRECISION DATA AT THE Z PEAK
• Heavy neutral leptons and high-intensity observables
• On the role of leptonic CPV phases in cLFV observables
• CONSTRAINTS FROM LEPTON UNIVERSALITY AT THE Z PEAK ON UNIFIED THEORIES
• Lepton flavor violation in the $\mu \nu$SSM with slepton flavor mixing
• Electron electric dipole moment in Inverse Seesaw models
• One-loop effective LFV $Z{l}_k{l}_m$ vertex from heavy neutrinos within the Mass Insertion Approximation
• Gauge-Independent Analysis of K_L --> e μin Left-Right Models
• Some constraints on neutral heavy leptons from flavor-conserving decays of the Z boson
• A Note on Charge Quantization Through Anomaly Cancellation
• Generalised $\mu$-$\tau$ symmetries and calculable gauge kinetic and mass mixing in $U(1{)}_{L_{\mu }-L_{\tau }}$ models
• CP Violation Induced by Heavy Majorana Neutrinos in the Decays of Higgs Scalars into Top-Quark, W- and Z-Boson Pairs
• Measuring lepton number violation in heavy neutral lepton decays at the future muon collider
• Heavy Neutral Leptons -- Advancing into the PeV domain
• Phenomenology of neutral heavy leptons
• Lepton flavor violating decay Z-> l_i l_j in the 331 model
• Quantum Effects on Higgs-Boson Production and Decay due to Majorana Neutrinos
• Two-body lepton-flavour-violating decays in a 2HDM with soft family-lepton-number breaking
• On-shell renormalization of the mixing matrices in Majorana neutrino theories
• CP violation through particle mixing and the H-A lineshape
• Heavy-Neutrino Chirality Enhancement of the Decay $K_L->e\mu$ in Left-Right Symmetric Models
• Freeze-In Dark Matter within the Seesaw mechanism
• Emergent new symmetry from the Higgs shadow
• Neutrino Properties
• Neutrinos Properties Beyond the Standard Model
• Neutrino physics beyond neutrino masses
• Recent Results on Neutrino Masses
• Neutrinos and Physics Beyond the Standard Model
• LFV decays in a 3-4-1 model with minimal inverse seesaw neutrinos