Updated T2K measurements of muon neutrino and antineutrino disappearance using 1.5e21 protons on target
(2017)
Combined analysis of neutrino and antineutrino oscillations at T2K
Physical Review Letters American Physical Society 118:15 (2017) 151801
Abstract:
T2K reports its first results in the search for CP violation in neutrino oscillations using appearance and disappearance channels for neutrino- and antineutrino-mode beams. The data include all runs from January 2010 to May 2016 and comprise 7.482×10^{20} protons on target in neutrino mode, which yielded in the far detector 32 e-like and 135 μ-like events, and 7.471×10^{20} protons on target in antineutrino mode, which yielded 4 e-like and 66 μ-like events. Reactor measurements of sin^{2}2θ_{13} have been used as an additional constraint. The one-dimensional confidence interval at 90% for the phase δ_{CP} spans the range (-3.13, -0.39) for normal mass ordering. The CP conservation hypothesis (δ_{CP}=0, π) is excluded at 90% C.L.Search for Lorentz and CPT violation using sidereal time dependence of neutrino flavor transitions over a short baseline
(2017)
First measurement of the muon neutrino charged current single pion production cross section on water with the T2K near detector
Physical Review D American Physical Society 95:1 (2017)
Abstract:
The T2K off-axis near detector, ND280, is used to make the first differential cross section measurements of muon neutrino charged current single positive pion production on a water target at energies ∼0.8 GeV. The differential measurements are presented as a function of the muon and pion kinematics, in the restricted phase space defined by pπ+>200 MeV/c, pμ>200 MeV/c, cos(θπ+)>0.3 and cos(θμ)>0.3. The total flux integrated νμ charged current single positive pion production cross section on water in the restricted phase space is measured to be σFirst combined analysis of neutrino and antineutrino oscillations at T2K
(2017)