%0 Journal Article
%T Measurement of Neutrino Oscillation Parameters from Muon Neutrino Disappearance with an Off-Axis Beam
%A T2K Collaboration (Abe, K. et al
%A Cervera-Villanueva, A.
%A Escudero, L.
%A Gomez-Cadenas, J. J.
%A Izmaylov, A.
%A Monfregola, L.
%A Sorel, M.
%A Stamoulis, P.
%J Physical Review Letters
%D 2013
%V 111
%N 21
%I Amer Physical Soc
%@ 0031-9007
%G English
%F T2KCollaborationAbe_etal2013
%O WOS:000327245600004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1656), last updated on Wed, 11 Feb 2015 11:57:20 +0000
%X The T2K Collaboration reports a precision measurement of muon neutrino disappearance with an off-axis neutrino beam with a peak energy of 0.6 GeV. Near detector measurements are used to constrain the neutrino flux and cross section parameters. The Super-Kamiokande far detector, which is 295 km downstream of the neutrino production target, collected data corresponding to 3.01 x 10(20) protons on target. In the absence of neutrino oscillations, 205 +/- 17 (syst) events are expected to be detected while only 58 muon neutrino event candidates are observed. A fit to the neutrino rate and energy spectrum, assuming three neutrino flavors and normal mass hierarchy yields a best-fit mixing angle sin(2) (theta(23)) = 0.514 +/- 0.082 and mass splitting vertical bar Delta m(32)(2)vertical bar = 2.44(-0.15)(+0.17) x 10(-3) eV(2)/c(4). Our result corresponds to the maximal oscillation disappearance probability.
%R 10.1103/PhysRevLett.111.211803
%U http://arxiv.org/abs/1308.0465
%U https://doi.org/10.1103/PhysRevLett.111.211803
%P 211803-7pp