Measurement of the Neutrino Mass Splitting and Flavor Mixing by MINOS

2011/03/02 by The MINOS Collaboration, P. Adamson, C. Andreopoulos +142
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.1103/physrevlett.106.181801

published as Phys.Rev.Lett.106:181801,2011 · 5 pages, 4 figures

arxiv created 2011/03/02 · openalex publication_date 2011/05/02 · arxiv updated 2011/05/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

Abstract

Measurements of neutrino oscillations using the disappearance of muon neutrinos from the Fermilab NuMI neutrino beam as observed by the two MINOS detectors are reported. New analysis methods have been applied to an enlarged data sample from an exposure of 7.25\ifmmode×\else\texttimes\fi10²⁰ protons on target. A fit to neutrino oscillations yields values of |\ensuremathΔm²|=(2.32_\ensuremath-0.08^+0.12)\ifmmode×\else\texttimes\fi10^\ensuremath-3 eV² for the atmospheric mass splitting and sin²(2\ensuremathθ)>0.90 (90% C.L.) for the mixing angle. Pure neutrino decay and quantum decoherence hypotheses are excluded at 7 and 9 standard deviations, respectively.

Citations

• Probing Possible Decoherence Effects in Atmospheric Neutrino Oscillations
• Nearest neighbor pattern classification