2008/07/31 by P. Adamson, C. Andreopoulos, K. Arms +97 · 65 citations
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Charged current #Current (fluid) #Event (particle physics) #Limit (mathematics) #MINOS #Mixing (physics) #Neutral current #Neutrino #Neutrino Physics Research #Neutrino oscillation #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Spectral line #Sterile neutrino #hep-ex
paper · pdf · open access · doi:10.1103/physrevlett.101.221804
published in Physical Review Letters 101(22), 221804 (American Physical Society) · 5 pages, 3 figures
arxiv created 2008/10/03 · openalex publication_date 2008/11/26 · arxiv updated 2019/08/13 · openalex created_date 2021/04/13 · openalex updated_date 2026/08/05
We report the first detailed comparisons of the rates and spectra of neutral-current neutrino interactions at two widely separated locations. A depletion in the rate at the far site would indicate mixing between nu(mu) and a sterile particle. No anomalous depletion in the reconstructed energy spectrum is observed. Assuming oscillations occur at a single mass-squared splitting, a fit to the neutral- and charged-current energy spectra limits the fraction of nu(mu) oscillating to a sterile neutrino to be below 0.68 at 90% confidence level. A less stringent limit due to a possible contribution to the measured neutral-current event rate at the far site from nu(e) appearance at the current experimental limit is also presented.