Speaker
Tianlu Yuan
(University of Colorado)
Description
The Tokai to Kamioka (T2K) experiment is a 295-km long-baseline
neutrino experiment aimed towards the measurement of neutrino oscillation parameters $\theta_{13}$ and $\theta_{23}$. Precise measurement of these parameters requires accurate knowledge of neutrino cross sections. We present
a flux-averaged double differential measurement of the charged-current
cross section on water with zero pions in the final state using the T2K
off-axis near detector, ND280. A selection of $\nu_{\mu}$ charged-current events
occurring in the Pi-Zero subdetector (P0D) of ND280 is performed with
$5.8 \times 10^{20}$ protons on target. The charged, outgoing tracks are required
to enter and be identified by the ND280 Tracker. The cross section is determined using an iterative Bayesian unfolding technique. By separating
the dataset into time periods when the P0D water layers are filled with
water and when they are empty, a subtraction method provides a distribution of $\nu_{\mu}$ interactions on water only. Systematic uncertainties on the
neutrino flux, interaction model, and detector simulation are propagated
numerically within the unfolding framework.
Primary author
Laura Kormos
