@Article{T2KCollaborationAbe_etal2014,
author="T2K Collaboration (Abe, K. et al
and Cervera-Villanueva, A.
and Escudero, L.
and Izmaylov, A.
and Monfregola, L.
and Sorel, M.
and Stamoulis, P.",
title="Precise Measurement of the Neutrino Mixing Parameter theta(23) from Muon Neutrino Disappearance in an Off-Axis Beam",
journal="Physical Review Letters",
year="2014",
publisher="Amer Physical Soc",
volume="112",
number="18",
pages="181801--8pp",
abstract="New data from the T2K neutrino oscillation experiment produce the most precise measurement of the neutrino mixing parameter theta(23). Using an off-axis neutrino beam with a peak energy of 0.6 GeV and a data set corresponding to 6.57 x 10(20) protons on target, T2K has fit the energy-dependent nu(mu) oscillation probability to determine oscillation parameters. The 68{\%} confidence limit on sin(2)(theta(23)) is 0.514(-0.056)(+0.055) (0.511 +/- 0.055), assuming normal (inverted) mass hierarchy. The best-fit mass-squared splitting for normal hierarchy is Delta m(32)(2) = (2.51 +/- 0.10) x 10(-3) eV(2)/c(4) (inverted hierarchy: Delta m(13)(2) = (2.48 +/- 0.10) x 10(-3) eV(2)/c(4)). Adding a model of multinucleon interactions that affect neutrino energy reconstruction is found to produce only small biases in neutrino oscillation parameter extraction at current levels of statistical uncertainty.",
optnote="WOS:000339629400005",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1877), last updated on Wed, 11 Feb 2015 11:56:10 +0000",
issn="0031-9007",
doi="10.1103/PhysRevLett.112.181801",
opturl="http://arxiv.org/abs/1403.1532",
opturl="https://doi.org/10.1103/PhysRevLett.112.181801",
archivePrefix="arXiv",
eprint="1403.1532",
language="English"
}