Measurement of muon antineutrino oscillations with an accelerator-produced off-axis beam
Physical review letters, 2016•APS
T2K reports its first measurements of the parameters governing the disappearance of ν¯ μ in
an off-axis beam due to flavor change induced by neutrino oscillations. The
quasimonochromatic ν¯ μ 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 ν¯ μ survival
probability is expected to be minimal. Using a data set corresponding to 4.01× 10 20 protons
on target, 34 fully contained μ-like events were observed. The best-fit oscillation parameters …
an off-axis beam due to flavor change induced by neutrino oscillations. The
quasimonochromatic ν¯ μ 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 ν¯ μ survival
probability is expected to be minimal. Using a data set corresponding to 4.01× 10 20 protons
on target, 34 fully contained μ-like events were observed. The best-fit oscillation parameters …
T2K reports its first measurements of the parameters governing the disappearance of in an off-axis beam due to flavor change induced by neutrino oscillations. The quasimonochromatic 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 survival probability is expected to be minimal. Using a data set corresponding to protons on target, 34 fully contained -like events were observed. The best-fit oscillation parameters are and with 68% confidence intervals of and , respectively. These results are in agreement with existing antineutrino parameter measurements and also with the disappearance parameters measured by T2K.