Rights statement: © 2013 American Physical Society
Final published version, 1.03 MB, PDF document
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 - Measurement of neutrino oscillation parameters from muon neutrino disappearance with an off-axis beam
AU - Bentham, Steven
AU - Bertram, Iain
AU - Finch, Alex
AU - Kormos, Laura
AU - O'Keeffe, Helen
AU - Ratoff, Peter
AU - Reeves, Matthew
AU - Southwell, Luke
AU - Dealtry, Thomas James
AU - T2K Collaboration
AU - Brailsford, Dominic Bevan
N1 - © 2013 American Physical Society
PY - 2013/11/19
Y1 - 2013/11/19
N2 - The T2K Collaboration reports a precision measurement of muon neutrino disappearance with an off-axis neutrino beam with a peak energy of 0.6 GeV. Near detector measurements are used to constrain the neutrino flux and cross section parameters. The Super-Kamiokande far detector, which is 295 km downstream of the neutrino production target, collected data corresponding to 3.01×1020 protons on target. In the absence of neutrino oscillations, 205±17 (syst) events are expected to be detected while only 58 muon neutrino event candidates are observed. A fit to the neutrino rate and energy spectrum, assuming three neutrino flavors and normal mass hierarchy yields a best-fit mixing angle sin2(θ23)=0.514±0.082 and mass splitting |Δm322|=2.44-0.15+0.17×10-3 eV2/c4. Our result corresponds to the maximal oscillation disappearance probability.
AB - The T2K Collaboration reports a precision measurement of muon neutrino disappearance with an off-axis neutrino beam with a peak energy of 0.6 GeV. Near detector measurements are used to constrain the neutrino flux and cross section parameters. The Super-Kamiokande far detector, which is 295 km downstream of the neutrino production target, collected data corresponding to 3.01×1020 protons on target. In the absence of neutrino oscillations, 205±17 (syst) events are expected to be detected while only 58 muon neutrino event candidates are observed. A fit to the neutrino rate and energy spectrum, assuming three neutrino flavors and normal mass hierarchy yields a best-fit mixing angle sin2(θ23)=0.514±0.082 and mass splitting |Δm322|=2.44-0.15+0.17×10-3 eV2/c4. Our result corresponds to the maximal oscillation disappearance probability.
U2 - 10.1103/PhysRevLett.111.211803
DO - 10.1103/PhysRevLett.111.211803
M3 - Journal article
VL - 111
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 21
M1 - 211803
ER -