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The T2K experiment measures muon neutrino disappearance and electron neutrino appearance in accelerator-produced neutrino and antineutrino beams. With an exposure of $14.7(7.6)times 10^{20}$ protons on target in neutrino (antineutrino) mode, 89 $ u_e$ candidates and 7 anti-$ u_e$ candidates were observed while 67.5 and 9.0 are expected for $delta_{CP}=0$ and normal mass ordering. The obtained $2sigma$ confidence interval for the $CP$ violating phase, $delta_{CP}$, does not include the $CP$-conserving cases ($delta_{CP}=0,pi$). The best-fit values of other parameters are $sin^2theta_{23} = 0.526^{+0.032}_{-0.036}$ and $Delta m^2_{32}=2.463^{+0.071}_{-0.070}times10^{-3} mathrm{eV}^2/c^4$.
We report measurements by the T2K experiment of the parameters $theta_{23}$ and $Delta m^2_{32}$ which govern the disappearance of muon neutrinos and antineutrinos in the three-flavor PMNS neutrino oscillation model at T2Ks neutrino energy and propag
The T2K experiment reports updated measurements of neutrino and antineutrino oscillations using both appearance and disappearance channels. This result comes from an exposure of $14.9~(16.4) times 10^{20}$ protons on target in neutrino (antineutrino)
We report on measurements of neutrino oscillation using data from the T2K long-baseline neutrino experiment collected between 2010 and 2013. In an analysis of muon neutrino disappearance alone, we find the following estimates and 68% confidence inter
We report measurements by the T2K experiment of the parameters $theta_{23}$ and $Delta m^{2}_{32}$ governing the disappearance of muon neutrinos and antineutrinos in the three flavor neutrino oscillation model. Utilizing the ability of the experiment
The disappearance of reactor antineutrinos in the Double Chooz experiment is used to investigate the possibility of neutrino-antineutrino oscillations arising due to the breakdown of Lorentz invariance. We find no evidence for this phenomenon and set