First muon anti-neutrino disappearance oscillation results from T2K

Abstract

This talk presented the first muon anti-neutrino disappearance analysis using data from the T2K anti-neutrino data taken in 2014 and up to March 12, 2015. The preliminary measured oscillation parameters, using $2.3\times 10^{20}$ protons on target, are $\Delta {\bar{\mathrm{m}}}_{32}^2=2.33_{-0.23}^{+0.27}\times 10^{-3}$eV${}^2$, and sin${}^2{\bar{\theta }}_{23}=0.515_{-0.095}^{+0.085}$. These oscillation parameters are consistent with the neutrino mode, and with the measurements of the MINOS experiment.

5 pages, 3 figures, presented at CIPANP 2015 on behalf of the T2K collaboration

References in corpus (6)

• Measurements of neutrino oscillation in appearance and disappearance channels by the T2K experiment with 6.6E20 protons on target
• The T2K Fine-Grained Detectors
• The Electromagnetic Calorimeter for the T2K Near Detector ND280
• The T2K Side Muon Range Detector
• Design and performance of the muon monitor for the T2K neutrino oscillation experiment
• Optical Transition Radiation Monitor for the T2K Experiment