New results from the T2K neutrino oscillation experiment

The T2K experiment searches for the appearance of electron neutrinos in a muon neutrino beam. The rate of this process is sensitive to the neutrino mixing parameter θ 13 . Recent measurements that imply that ν μ → ν e oscillations should be observable. Using all data through May 15, 2012 the T2K exp...

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Bibliographic Details
Published inHyperfine interactions Vol. 215; no. 1-3; pp. 77 - 84
Main Author Oser, Scott M.
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.03.2013
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Summary:The T2K experiment searches for the appearance of electron neutrinos in a muon neutrino beam. The rate of this process is sensitive to the neutrino mixing parameter θ 13 . Recent measurements that imply that ν μ → ν e oscillations should be observable. Using all data through May 15, 2012 the T2K experiment has detected 10 candidate ν e events, with an expected background for θ 13  = 0 of 2.73±0.37 events. This 3.2 σ excess of ν e events is the strongest indication to date for appearance of electron neutrinos in a neutrino oscillation experiment, and for normal mass hierarchy and δ CP  = 0 yields at the 68 % C.L.
ISSN:0304-3843
1572-9540
DOI:10.1007/s10751-013-0798-5