Improved search for Muon-neutrino to electron-neutrino oscillations in MINOS.

Journal article

We report the results of a search for ν(e) appearance in a ν(μ) beam in the MINOS long-baseline neutrino experiment. With an improved analysis and an increased exposure of 8.2 × 10(20) protons on the NuMI target at Fermilab, we find that 2 sin(2) (θ(23))sin(2)(2θ(13))<0.12(0.20) at 90% confidence level for δ = 0 and the normal (inverted) neutrino mass hierarchy, with a best-fit of 2sin(2) (θ(23))sin(2)(2θ(13)) = 0.041(-0.031)(+0.047) (0.079(-0.053) (+0.071)). The θ(13) = 0 hypothesis is disfavored by the MINOS data at the 89% confidence level.

Authors: Adamson, P; Auty, D; Ayres, D; Backhouse, C; Barr, G

• Journal: Physical Review Letters
• Volume: 107
• Issue: 18
• Pages: 181802
• Publication date: 2011-10-01
• DOI: 10.1103/physrevlett.107.181802
• EISSN: 1079-7114
• ISSN: 0031-9007
• Language: English
• Keywords: MINOS Collaboration