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Search for neutral-current induced single photon production at the ND280 near detector in T2K
(2019)Journal of Physics G: Nuclear and Particle PhysicsNeutrino neutral-current induced single photon production is a sub-leading order process for accelerator-based neutrino beam experiments including T2K. It is, however, an important process to understand because it is a background for electron (anti)neutrino appearance oscillation experiments. Here, we performed the first search of this process below 1 GeV using the fine-grained detector at the T2K ND280 off-axis near detector. By ...Journal Article -
Measurement of double-differential muon neutrino charged-current interactions on C8H8 without pions in the final state using the T2K off-axis beam
(2016)Physical Review DWe report the measurement of muon neutrino charged-current interactions on carbon without pions in the final state at the T2K beam energy using 5.734×1020 protons on target. For the first time the measurement is reported as a flux-integrated, double-differential cross section in muon kinematic variables (cosθμ, pμ), without correcting for events where a pion is produced and then absorbed by final state interactions. Two analyses are ...Journal Article -
Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam
(2016)Physical Review LettersT2K reports its first measurements of the parameters governing the disappearance of ¯νμ in an off-axis beam due to flavor change induced by neutrino oscillations. The quasimonochromatic ¯νμ 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 ¯νμ survival probability is expected to be minimal. Using a data set corresponding to 4.01×1020 protons on target, 34 fully ...Journal Article -
Measurement of the muon neutrino inclusive charged-current cross section in the energy range of 1–3 GeV with the T2K INGRID detector
(2016)Physical Review DWe report a measurement of the νμ-nucleus inclusive charged-current cross section (=σcc) on iron using data from the INGRID detector exposed to the J-PARC neutrino beam. The detector consists of 14 modules in total, which are spread over a range of off-axis angles from 0° to 1.1°. The variation in the neutrino energy spectrum as a function of the off-axis angle, combined with event topology information, is used to calculate this cross ...Journal Article -
Measurement of the electron neutrino charged-current interaction rate on water with the T2K ND280 π0 detector
(2015)Physical Review DThis paper presents a measurement of the charged current interaction rate of the electron neutrino beam component of the beam above 1.5 GeV using the large fiducial mass of the T2K π0 detector. The predominant portion of the νe flux (∼85%) at these energies comes from kaon decays. The measured ratio of the observed beam interaction rate to the predicted rate in the detector with water targets filled is 0.89±0.08(stat)±0.11(sys), and with ...Journal Article -
Measurements of neutrino oscillation in appearance and disappearance channels by the T2K experiment with 6.6×1020 protons on target
(2015)Physical Review DJournal Article