Sterile Neutrino Fits

Abstract

After a brief review of the results of solar, atmospheric and long-baseline neutrino oscillation experiments which led to the current three-neutrino mixing paradigm, we discuss indications of neutrino oscillation experiments in favor of short-baseline oscillations which require the existence of one or more sterile neutrinos. We show that the simplest possibility of existence of one sterile neutrino is not enough to fit all data of short-baseline neutrino oscillation experiments because of two tensions: a tension between neutrino and antineutrino data and a tension between appearance and disappearance data. The tension between neutrino and antineutrino data is eliminated with the addition of a second sterile neutrino which allows CP-violating effects in short-baseline experiments. In this case the tension between appearance and disappearance data is reduced, but cannot be eliminated.

10 pages, based on talks presented at La Thuile 2011, NeuTel 2011 and IFAE 2011

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Cited by in corpus (12)

• Evidence of theta(13)>0 from global neutrino data analysis
• The minimal 3+2 neutrino model versus oscillation anomalies
• Light Sterile Neutrinos and Short Baseline Neutrino Oscillation Anomalies
• Statistical tests of sterile neutrinos using cosmology and short-baseline data
• Dark Radiation and Decaying Matter
• Day-Night Asymmetries in Active-Sterile Solar Neutrino Oscillations
• Atmospheric neutrinos as a probe of eV^2-scale active-sterile oscillations
• Probing Sterile Neutrino Parameters with Double Chooz, Daya Bay and RENO
• Light sterile neutrino sensitivity of 163Ho experiments
• Neutrino oscillometry at the next generation neutrino observatory
• Phenomenology of Sterile Neutrinos
• Using MiniBooNE neutral current elastic cross section results to constrain 3+1 sterile neutrino models