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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Search for CP violation in Neutrino and Antineutrino Oscillations by the T2K experiment with $2.2\times10^{21}$ protons on target
AU - Abe, K.
AU - Akutsu, R.
AU - Amey, J.
AU - Andreopoulos, C.
AU - Antonova, M.
AU - Aoki, S.
AU - Ariga, A.
AU - Ashida, Y.
AU - Azuma, Y.
AU - Ban, S.
AU - Barbi, M.
AU - Barker, G. J.
AU - Barr, G.
AU - Barry, C.
AU - Batkiewicz, M.
AU - Bench, F.
AU - Berardi, V.
AU - Berkman, S.
AU - Berner, R. M.
AU - Berns, L.
AU - Bhadra, S.
AU - Bienstock, S.
AU - Blondel, A.
AU - Bolognesi, S.
AU - Bourguille, B.
AU - Brailsford, D.
AU - Bravar, A.
AU - Bronner, C.
AU - Avanzini, M. Buizza
AU - Calcutt, J.
AU - Campbell, T.
AU - Cao, S.
AU - Catanesi, M. G.
AU - Cervera, A.
AU - Chappell, A.
AU - Checchia, C.
AU - Cherdack, D.
AU - Chikuma, N.
AU - Christodoulou, G.
AU - Coleman, J.
AU - Collazuol, G.
AU - Coplowe, D.
AU - Dealtry, T.
AU - Finch, A. J.
AU - Knox, A.
AU - Kormos, L. L.
AU - Lawe, M.
AU - Nowak, J.
AU - O'Keeffe, H. M.
AU - Ratoff, P. N.
AU - T2K Collaboration
N1 - Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
PY - 2018/10/24
Y1 - 2018/10/24
N2 - 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 $\nu_e$ candidates and 7 anti-$\nu_e$ candidates were observed while 67.5 and 9.0 are expected for $\delta_{CP}=0$ and normal mass ordering. The obtained $2\sigma$ 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 $\sin^2\theta_{23} = 0.526^{+0.032}_{-0.036}$ and $\Delta m^2_{32}=2.463\pm0.065\times10^{-3} \mathrm{eV}^2/c^4$.
AB - 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 $\nu_e$ candidates and 7 anti-$\nu_e$ candidates were observed while 67.5 and 9.0 are expected for $\delta_{CP}=0$ and normal mass ordering. The obtained $2\sigma$ 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 $\sin^2\theta_{23} = 0.526^{+0.032}_{-0.036}$ and $\Delta m^2_{32}=2.463\pm0.065\times10^{-3} \mathrm{eV}^2/c^4$.
KW - hep-ex
U2 - 10.1103/PhysRevLett.121.171802
DO - 10.1103/PhysRevLett.121.171802
M3 - Journal article
VL - 121
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 17
M1 - 171802
ER -