Speaker
Yusuke Koshio
(Okayama University)
Description
We report the first measurement of the neutral current quasi-elastic (NCQE) cross section on oxygen by observing nuclear de-excitation gamma rays with the T2K neutrino beam. These gamma rays are observed in the Super-Kamiokande water Cherenkov detector. We select candidate events by using the T2K beam timing, and observed 43 events in the 4-30MeV reconstructed energy region, comparing to the MC prediction 55.7. We observed an NCQE cross section of 1.35X10^{38}cm^{-2} with a 68% confidence interval of (1.06, 1.94)X10^{38}cm^{-2}.
| WG1: Neutrino Oscillation Physics (Yes/No) | No |
|---|---|
| WG2: Neutrino Scattering Physics (Yes/No) | Yes |
| WG3: Accelerator Physics (Yes/No) | No |
| WG4: Muon Physics (Yes/No) | No |
| Type of presentation | Oral presentation |
Author
Yusuke Koshio
(Okayama University)
