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Measurement of muon antineutrino oscillations with an accelerator-produced off-axis beam

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Measurement of muon antineutrino oscillations with an accelerator-produced off-axis beam. / T2K Collaboration.

In: Physical review letters, Vol. 116, No. 18, 181801, 05.05.2016.

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T2K Collaboration. / Measurement of muon antineutrino oscillations with an accelerator-produced off-axis beam. In: Physical review letters. 2016 ; Vol. 116, No. 18.

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@article{6f08e02697dc4c9eba98ff195f40582b,
title = "Measurement of muon antineutrino oscillations with an accelerator-produced off-axis beam",
abstract = "T2K reports its first measurements of the parameters governing the disappearance of $\overline{\nu}_\mu$ in an off-axis beam due to flavour change induced by neutrino oscillations. The quasi-monochromatic $\overline{\nu}_\mu$ beam, produced with a peak energy of 0.6 GeV at J-PARC, is observed at the far detector Super-Kamiokande, 295 km away, where the $\overline{\nu}_\mu$ survival probability is expected to be minimal. Using a dataset corresponding to $4.01 \times 10^{20}$ protons on target, $34$ fully contained $\mu$-like events were observed. The best-fit oscillation parameters are: $\sin^2 (\overline{\theta}_{23}) = 0.45$ and $|\Delta\overline{m}^2_{32}| = 2.51 \times 10^{-3}$ eV$^2$ with 68% confidence intervals of 0.38 - 0.64 and 2.26 - 2.80 ($\times 10^{-3}$ eV$^2$) respectively. These world-leading results are in agreement with existing anti-neutrino parameter measurements and also with the $\nu_\mu$ disappearance parameters measured by T2K.",
keywords = "hep-ex",
author = "K. Abe and C. Andreopoulos and M. Antonova and S. Aoki and A. Ariga and S. Assylbekov and D. Autiero and M. Barbi and Barker, {G. J.} and G. Barr and P. Bartet-Friburg and M. Batkiewicz and F. Bay and V. Berardi and S. Berkman and S. Bhadra and A. Blondel and S. Bolognesi and S. Bordoni and D. Brailsford and A. Bravar and C. Bronner and Avanzini, {M. Buizza} and Calland, {R. G.} and S. Cao and Rodr{\'i}guez, {J. Caravaca} and R. Castillo and Catanesi, {M. G.} and A. Cervera and D. Cherdack and N. Chikuma and G. Christodoulou and J. Coleman and G. Collazuol and L. Cremonesi and A. Dabrowska and Rosa, {G. De} and T. Dealtry and Denner, {P. F.} and Finch, {A. J.} and N. Grant and A. Knox and Kormos, {L. L.} and I. Lamont and M. Lawe and J. Nowak and O'Keeffe, {H. M.} and Ratoff, {P. N.} and D. Shaw and L. Southwell and {T2K Collaboration}",
note = "8 pages, 4 figures",
year = "2016",
month = may,
day = "5",
doi = "10.1103/PhysRevLett.116.181801",
language = "English",
volume = "116",
journal = "Physical review letters",
issn = "1079-7114",
publisher = "American Physical Society",
number = "18",

}

RIS

TY - JOUR

T1 - Measurement of muon antineutrino oscillations with an accelerator-produced off-axis beam

AU - Abe, K.

AU - Andreopoulos, C.

AU - Antonova, M.

AU - Aoki, S.

AU - Ariga, A.

AU - Assylbekov, S.

AU - Autiero, D.

AU - Barbi, M.

AU - Barker, G. J.

AU - Barr, G.

AU - Bartet-Friburg, P.

AU - Batkiewicz, M.

AU - Bay, F.

AU - Berardi, V.

AU - Berkman, S.

AU - Bhadra, S.

AU - Blondel, A.

AU - Bolognesi, S.

AU - Bordoni, S.

AU - Brailsford, D.

AU - Bravar, A.

AU - Bronner, C.

AU - Avanzini, M. Buizza

AU - Calland, R. G.

AU - Cao, S.

AU - Rodríguez, J. Caravaca

AU - Castillo, R.

AU - Catanesi, M. G.

AU - Cervera, A.

AU - Cherdack, D.

AU - Chikuma, N.

AU - Christodoulou, G.

AU - Coleman, J.

AU - Collazuol, G.

AU - Cremonesi, L.

AU - Dabrowska, A.

AU - Rosa, G. De

AU - Dealtry, T.

AU - Denner, P. F.

AU - Finch, A. J.

AU - Grant, N.

AU - Knox, A.

AU - Kormos, L. L.

AU - Lamont, I.

AU - Lawe, M.

AU - Nowak, J.

AU - O'Keeffe, H. M.

AU - Ratoff, P. N.

AU - Shaw, D.

AU - Southwell, L.

AU - T2K Collaboration

N1 - 8 pages, 4 figures

PY - 2016/5/5

Y1 - 2016/5/5

N2 - T2K reports its first measurements of the parameters governing the disappearance of $\overline{\nu}_\mu$ in an off-axis beam due to flavour change induced by neutrino oscillations. The quasi-monochromatic $\overline{\nu}_\mu$ beam, produced with a peak energy of 0.6 GeV at J-PARC, is observed at the far detector Super-Kamiokande, 295 km away, where the $\overline{\nu}_\mu$ survival probability is expected to be minimal. Using a dataset corresponding to $4.01 \times 10^{20}$ protons on target, $34$ fully contained $\mu$-like events were observed. The best-fit oscillation parameters are: $\sin^2 (\overline{\theta}_{23}) = 0.45$ and $|\Delta\overline{m}^2_{32}| = 2.51 \times 10^{-3}$ eV$^2$ with 68% confidence intervals of 0.38 - 0.64 and 2.26 - 2.80 ($\times 10^{-3}$ eV$^2$) respectively. These world-leading results are in agreement with existing anti-neutrino parameter measurements and also with the $\nu_\mu$ disappearance parameters measured by T2K.

AB - T2K reports its first measurements of the parameters governing the disappearance of $\overline{\nu}_\mu$ in an off-axis beam due to flavour change induced by neutrino oscillations. The quasi-monochromatic $\overline{\nu}_\mu$ beam, produced with a peak energy of 0.6 GeV at J-PARC, is observed at the far detector Super-Kamiokande, 295 km away, where the $\overline{\nu}_\mu$ survival probability is expected to be minimal. Using a dataset corresponding to $4.01 \times 10^{20}$ protons on target, $34$ fully contained $\mu$-like events were observed. The best-fit oscillation parameters are: $\sin^2 (\overline{\theta}_{23}) = 0.45$ and $|\Delta\overline{m}^2_{32}| = 2.51 \times 10^{-3}$ eV$^2$ with 68% confidence intervals of 0.38 - 0.64 and 2.26 - 2.80 ($\times 10^{-3}$ eV$^2$) respectively. These world-leading results are in agreement with existing anti-neutrino parameter measurements and also with the $\nu_\mu$ disappearance parameters measured by T2K.

KW - hep-ex

U2 - 10.1103/PhysRevLett.116.181801

DO - 10.1103/PhysRevLett.116.181801

M3 - Journal article

VL - 116

JO - Physical review letters

JF - Physical review letters

SN - 1079-7114

IS - 18

M1 - 181801

ER -