Measurement of the neutrino mass splitting and flavor mixing by MINOS

Adamson, P, Andreopoulos, C, Armstrong, R, Auty, D.J, Ayres, D.S, Backhouse, C, Barr, G, Bishai, M, Blake, A, Bock, G.J, Devenish, N E, Falk, E, Hartnell, J, Lefeuvre, G and et al, (2011) Measurement of the neutrino mass splitting and flavor mixing by MINOS. Physical Review Letters, 106 (18). p. 181801. ISSN 0031-9007

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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 $7.25 imes 10^{20}$ protons on target. A fit to neutrino oscillations yields values of $|Delta m^2| = (2.32^{+0.12}_{-0.08}) imes10^{-3}$,eV$^2$ for the atmospheric mass splitting and $ m sin^2!(2 heta) > 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.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: David Auty
Date Deposited: 06 Feb 2012 21:23
Last Modified: 07 Mar 2017 09:28
URI: http://sro.sussex.ac.uk/id/eprint/31055

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