Invisible Z decay width bounds on active-sterile neutrino mixing in the (3+1) and (3+2) models

Abstract

In this work we consider the standard model extended with singlet sterile neutrinos with mass in the eV range and mixed with the active neutrinos. The active-sterile neutrino mixing renders new contributions to the invisible Z decay width which, in the case of light sterile neutrinos, depends on the active-sterile mixing matrix elements only. We then use the current experimental value of the invisible Z decay width to obtain bounds on these mixing matrix elements for both (3+1) and (3+2) models.

arXiv comment10 pages, 5 figures

References in corpus (45)

• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• Evidence for Neutrino Oscillations from the Observation of Electron Anti-neutrinos in a Muon Anti-Neutrino Beam
• Sterile Neutrinos as Dark Matter
• Evidence for ${\bar{\nu }}_{\mu }\to {\bar{\nu }}_e$ Oscillations from the LSND Experiment at LAMPF
• Phenomenology with Massive Neutrinos
• Status of global fits to neutrino oscillations
• Sterile Neutrino Hot, Warm, and Cold Dark Matter
• Candidate Events in a Search for Muon Antineutrino to Electron Antineutrino Oscillations
• A Search for Electron Neutrino Appearance at the Delta m**2 ~ 1 eV**2 Scale
• Massive sterile neutrinos as warm Dark Matter
• Can sterile neutrinos be the dark matter?
• Phenomenology of Neutrino Oscillations
• Dark-matter sterile neutrinos in models with a gauge singlet in the Higgs sector
• Sterile neutrino oscillations after first MiniBooNE results
• Can sterile neutrinos be ruled out as warm dark matter candidates?
• A combined analysis of short-baseline neutrino experiments in the (3+1) and (3+2) sterile neutrino oscillation hypotheses
• Neutrino mass spectrum from the results of neutrino oscillation experiments
• A sterile neutrino scenario constrained by experiments and cosmology
• Constraining the window on sterile neutrinos as warm dark matter
• Implications of neutrino data circa 2005
• See-Saw Energy Scale and the LSND Anomaly
• (3+1)-spectrum of neutrino masses: A chance for LSND?
• Variations on Four-Neutrino Oscillations
• Leptonic CP violation studies at MiniBooNE in the (3+2) sterile neutrino oscillation hypothesis
• Fate of the Sterile Neutrino
• Supernova Bounds on Resonant Active-Sterile Neutrino Conversions
• Four-Neutrino Mass Spectra and the Super-Kamiokande Atmospheric Up-Down Asymmetry
• Statistical Analysis of Different Muon-antineutrino->Electron-antineutrino Searches
• Naturally light right-handed neutrinos in a 3-3-1 Model
• 4-Neutrino mass schemes and the likelihood of (3+1)-mass spectra
• Telling Three from Four Neutrinos with Cosmology
• Seesaw Right Handed Neutrino as the Sterile Neutrino for LSND
• Connecting bimaximal neutrino mixing to a light sterile neutrino
• Cornering (3+1) sterile neutrino schemes
• Constraining Mass Spectra with Sterile Neutrinos from Neutrinoless Double Beta Decay, Tritium Beta Decay and Cosmology
• Four-Neutrino Mixing and Big-Bang Nucleosynthesis
• WMAPping out Neutrino Masses
• Chiral Gauge Models for Light Sterile Neutrinos
• Sterile Neutrinos and Global Symmetries
• Remark on the minimal seesaw model and leptogenesis with tri/bi-maximal mixing
• Neutrino Masses in the Effective Rank-5 Subgroups of E_6 I: Non-supersymmetric Case
• Neutrino Masses in the Effective Rank-5 Subgroups of E_6 II: Supersymmetric Case
• A Reanalysis of the LSND Neutrino Oscillation Experiment
• Constraints on singlet right-handed neutrinos coming from the $Z^0$-width

Cited by in corpus (1)

• Monte-Carlo sensitivity study for sterile neutrino search with ${}^{144}$Ce - ${}^{144}$Pr source and liquid scintillation detectors of various geometries