Evidence of Electron Neutrino Appearance in a Muon Neutrino Beam
By T. C. K. Abe, N. Abgrall, H. Aihara, T. Akiri, J. Albert, C. Andreopoulos, S. Aoki, A. Ariga, T. Ariga, S. Assylbekov and 345 more. 2013
168 citations recorded by the source corpus.
The T2K collaboration: reports evidence for electron neutrino appearance at the atmospheric mass splitting, |\Delta m_{32}^2|=2.4x10^{-3} eV^2. An excess of electron neutrino interactions over background is observed from a muon neutrino beam with a peak energy of 0.6 GeV at the Super-Kamiokande (SK) detector 295 km from the beam's origin. Signal and background predictions are constrained by data from near detectors located 280 m from the neutrino production target. We observe 11 electron neutrino candidate events at the SK detector when a background of 3.3\pm0.4(syst.) events is expected. The background-only hypothesis is rejected with a p-value of 0.0009 (3.1\sigma), and a fit assuming \nu_{\mu}->\nu_e oscillations with sin^2(2\theta_{23})=1, \delta_{CP}=0 and |\Delta m_{32}^2|=2.4x10^{-3} eV^2 yields sin^2(2\theta_{13})=0.088^{+0.049}_{-0.039}(stat.+syst.).
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/36d4a04a1974da4967e9fb072013fbe8952bee64
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In Nuclear and High Energy Physics
Citations in the corpus
- Letter of Intent: The Precision IceCube Next Generation Upgrade (PINGU) (2014, methodology): “This range is extended with the inclusion of results from T2K [18] and further still with the proposed CHIPS [19] experiment.”