Abe, K.Adam, J.Aihara, H.Akiri, T.Andreopoulos, C.Aoki, S.Ariga, A.Assylbekov, S.Autiero, D.Barbi, M.Barker, G.J.Barr, G.Bartet-Friburg, P.Bass, M.Batkiewicz, M.Bay, F.Berardi, V.Karlen, Deanet al.2021-05-182021-05-1820152015Abe, K., Adam, J., Aihara, H., Akiri, T., Andreopoulos, C., Karlen, D., … Żmuda, J. (2015). Neutrino oscillation physics potential of the T2K experiment. Progress of Theoretical and Experimental Physics, 2015(4), 1-36. https://doi.org/10.1093/ptep/ptv031.https://doi.org/10.1093/ptep/ptv031http://hdl.handle.net/1828/12975The observation of the recent electron neutrino appearance in a muon neutrino beam and the high-precision measurement of the mixing angle θ13 have led to a re-evaluation of the physics potential of the T2K long-baseline neutrino oscillation experiment. Sensitivities are explored for CP violation in neutrinos, non-maximal sin22θ23⁠, the octant of θ23⁠, and the mass hierarchy, in addition to the measurements of δCP⁠, sin2θ23⁠, and Δm232⁠, for various combinations of ν-mode and ν¯-mode data-taking. With an exposure of 7.8×1021 protons-on-target, T2K can achieve 1σ resolution of 0.050 (0.054) on sin2θ23 and 0.040 (0.045)×10−3eV2 on Δm232 for 100% (50%) neutrino beam mode running assuming sin2θ23=0.5 and Δm232=2.4×10−3eV2⁠. T2K will have sensitivity to the CP-violating phase δCP at 90% C.L. or better over a significant range. For example, if sin22θ23 is maximal (i.e. θ23=45∘⁠) the range is −115∘<δCP<−60∘ for normal hierarchy and +50∘<δCP<+130∘ for inverted hierarchy. When T2K data is combined with data from the NOνA experiment, the region of oscillation parameter space where there is sensitivity to observe a non-zero δCP is substantially increased compared to if each experiment is analyzed alone.enArticleDepartment of Physics and Astronomy