Speaker
Ms
Shiqi Yu
(IIT/ANL)
Description
NOvA is a long baseline neutrino oscillation experiment at Fermilab. It uses two detectors, the Near Detector at Fermilab and the Far Detector at a distance of 810 km at Ash River, Minnesota.These two functionally identical liquid scintillator calorimeters are 14 mrad off-axis from the beam, providing a neutrino flux narrowly peaked at around 2 GeV. NOvA measures the rate of $\nu_{e}$ appearance and $\nu_{\mu}$ disappearance at the Far Detector in the $\nu_{\mu}$ beam produced by the NuMI facility at Fermilab.
In this talk,I will present the latest NOvA results from a joint fit to $\nu_{\mu}$ disappearance and $\nu_e$ appearance. This talk will focus on the $\nu_e$ appearance analysis. The latest data set had $6.05\times10^{20}$ protons-on-target and we observed 33 $\nu_e$ candidate events over 8.2 predicted background events in our Far Detector. I will describe the fit to the FD data and discuss constraints on $\delta_{CP}$ , mass-hierarchy and the octant of the $\theta_{23}$ mixing angle.
Primary author
Ms
Shiqi Yu
(IIT/ANL)
Co-author
Dr
Zelimir Djurcic
(Argonne National Laboratory)