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Updated T2K measurements of muon neutrino and antineutrino disappearance using 1.5e21 protons on target

arXiv.org, Jun 27, 2017 [Peer Reviewed Journal]

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  • Title:
    Updated T2K measurements of muon neutrino and antineutrino disappearance using 1.5e21 protons on target
  • Author: Abe, K ; Amey, J ; Andreopoulos, C ; Antonova, M ; Aoki, S ; Ariga, A ; Ashida, Y ; Autiero, D ; Ban, S ; Barbi, M ; Barker, G ; Barr, G ; Barry, C ; Bartet-Friburg, P ; Batkiewicz, M ; Berardi, V ; Berkman, S ; Bhadra, S ; Bienstock, S ; Blondel
  • Found In: arXiv.org, Jun 27, 2017 [Peer Reviewed Journal]
  • Subjects: Neutrinos ; Particle Physics ; Experiments ; Antineutrinos ; Parameters ; Muons ; Neutrinos
  • Language: English
  • Description: 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 to run with either a mainly neutrino or a mainly antineutrino beam, the parameters are measured separately for neutrinos and antineutrinos. Using \(7.482 \times 10^{20}\) POT in neutrino running mode and \(7.471 \times 10^{20}\) POT in antineutrino mode, T2K obtained, \(\sin^{2}(\theta_{23})=0.51^{+0.08}_{-0.07}\) and \(\Delta m^{2}_{32} = 2.53^{+0.15}_{-0.13} \times 10^{-3}\)eV\(^{2}\)/c\(^{4}\) for neutrinos, and \(\sin^{2}({\overline{\theta}}_{23})=0.42^{+0.25}_{-0.07}\) and \({\Delta\overline{m}^2}_{32} = 2.55^{+0.33}_{-0.27} \times 10^{-3}\)eV\(^{2}\)/c\(^{4}\) for antineutrinos (assuming normal mass ordering). No significant differences between the values of the parameters describing the disappearance of muon neutrinos and antineutrinos...
  • Identifier: DOI: 10.1103/PhysRevD.96.011102

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