First Constraints on the Complete Neutrino Mixing Matrix with a Sterile Neutrino

Abstract

Neutrino oscillation models involving one extra mass eigenstate beyond the standard three ($3+1$) are fit to global short baseline experimental data and the recent IceCube ${\nu }_{\mu }+{\bar{\nu }}_{\mu }$ disappearance search result. We find a best fit of $\Delta m_{41}^2=1.75{\text{eV}}^2$ with $\Delta {\chi }_{null-min}^2$ (dof) of 50.61 (4). We find that the combined IceCube and short baseline data constrain ${\theta }_{34}$ to $<80^{\circ }(<6^{\circ })$ at 90\% C.L. for $\Delta m_{41}^2\approx 2(6){\text{eV}}^2$, which is improved over present limits. Incorporating the IceCube information provides the first constraints on all entries of the 3+1 mixing matrix.

7 pages, 4 figures

References in corpus (10)

• The Reactor Antineutrino Anomaly
• Measurement of the solar neutrino capture rate with gallium metal. III: Results for the 2002--2007 data-taking period
• Updated fit to three neutrino mixing: status of leptonic CP violation
• Physics Reach of High-Energy and High-Statistics IceCube Atmospheric Neutrino Data
• Improved Search for a Light Sterile Neutrino with the Full Configuration of the Daya Bay Experiment
• Search for Sterile Neutrinos Mixing with Muon Neutrinos in MINOS
• Dual baseline search for muon antineutrino disappearance at 0.1 eV^2 < Δm^2 < 100 eV^2
• Sterile neutrinos, lepton asymmetries, primordial elements: how much of each?
• Signature of sterile species in atmospheric neutrino data at neutrino telescopes
• Searches for sterile neutrinos with IceCube DeepCore

Cited by in corpus (7)

• Sterile Neutrinos or Flux Uncertainties? - Status of the Reactor Anti-Neutrino Anomaly
• Searching for eV-scale sterile neutrinos with eight years of atmospheric neutrinos at the IceCube neutrino telescope
• Neutrinos in Large Extra Dimensions and Short-Baseline ${\nu }_e$ Appearance
• A Combined View of Sterile-Neutrino Constraints from CMB and Neutrino Oscillation Measurements
• Joint short- and long-baseline constraints on light sterile neutrinos
• What measurements of neutrino neutral current events can reveal
• Dark matter, supernova neutrinos and other backgrounds in direct dark matter searches. The ANDES laboratory prospects