# 2015 CAP Congress / Congrès de l'ACP 2015

Jun 13 – 19, 2015
University of Alberta
America/Edmonton timezone
Welcome to the 2015 CAP Congress! / Bienvenue au congrès de l'ACP 2015!

## Constraining Oscillation Analysis Inputs at the T2K Near Detector

Jun 16, 2015, 4:30 PM
15m
CAB 235 (University of Alberta)

### CAB 235

#### University of Alberta

Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition) Particle Physics / Physique des particules (PPD)

### Speaker

Christine Nielsen (University of British Columbia)

### Description

The T2K long-baseline neutrino oscillation experiment is composed of a near detector at 280m and a far detector at Super-Kamiokande located 295 km from the neutrino beam in Tokai. The main oscillation analyses are performed using fits to the data collected at the far detector. These analyses depend on our ability to predict the event rates and energy spectra at the far detector, which in turn depend on cross-section and flux uncertainties. We use inputs from external data, such as MiniBooNE and MINER$\nu$A, as well as beam flux measurements to generate prior estimates of these uncertainties. T2K's near detector then provides a direct internal constraint on the convolution of the flux and cross-section, significantly reducing the uncertainties. This talk will discuss how data from the near detector on T2K is used to constrain the oscillation analysis inputs.

### Primary author

Christine Nielsen (University of British Columbia)

 Slides