Results and Prospects from NOvA

TL;DR

NOvA is a long-baseline neutrino experiment that has achieved significant results in neutrino oscillation measurements, favoring a normal mass hierarchy and demonstrating the detector's high event identification capability.

Contribution

This paper presents the first combined results from NOvA's neutrino and anti-neutrino data, highlighting its advanced detector design and its implications for neutrino mass hierarchy.

Findings

Observation of 18 $ar{ u}_e$ candidate events with >4$\sigma$ significance

Results favor a normal neutrino mass hierarchy

Demonstration of the detector's superb event identification capability

Abstract

NOvA is a long-baseline neutrino experiment that uses an upgraded NuMI neutrino source at Fermilab and a 14-kton detector at Ash River, Minnesota. The detector has a highly active, finely segmented design that offers superb event identification capability. This talk presents the latest $\nu_\mu$ ($\bar{\nu}_\mu$) disappearance and $\nu_e$ ($\bar{\nu}_e$) appearance combined results using the first NOvA anti-neutrino beam data. In the far detector, 18 $\bar{\nu}_e$ candidate events are observed, with a significance of $\bar{\nu}_e$ appearance more than 4 $\sigma$. The NOvA results favor a normal neutrino mass hierarchy.