Speaker
Description
The T2K experiment is a long base-line neutrino oscillation experiment which is designed to measure $\nu_\mu$ disappearance and $\nu_e$ appearance from the $\nu_\mu$ beam produced from a 30 GeV proton beam at J-PARC(Japan Proton Accelerator Research Complex). It consists of the J-PARC accelerator, a near detector complex (ND280) and a far detector (Super-Kamiokande). In order to achieve more precise $\nu_e$ appearance measurements and to explore CP violation in the neutrino sector, we need to improve our knowledge on $\nu_e$ interactions and determine contamination of $\nu_e$ in the $\nu_\mu$ beam better. The $\nu_e$ component in the beam that is intrinsic is the main background in the $\nu_e$ appearance measurement. Besides, a large systematic uncertainty in T2K $\nu_e$ appearance observation comes from uncertainties related with the neutrino cross-section modeling. Since the far detector is a water Cherenkov detector, neutrino interaction measurements on water are important to constrain the neutrino cross-section systematic uncertainties. The design of $\pi^0$ Detector(P0D), a component of ND280, which includes fillable water targets, allows us to measure on-water neutrino interaction cross-section. We developed a cross-section measurement method utilizing Markov-Chain Monte Carlo. In this talk, I will present the method and fake data study results of the charged current $\nu_e$ interaction cross section on-water.
| Are you are a member of the APS Division of Particles and Fields? | Yes |
|---|
