NOvA's latest three-flavor neutrino oscillations results

30 Aug 2021, 17:10
50m
Talk in parallel session Neutrino physics and astrophysics Discussion Panel Neutrinos 1

Speaker

Ashley Back (Indiana University)

Description

NOvA is a leading long-baseline neutrino experiment thanks to the powerful - nearly 700 kW - NuMI beam, which directs predominantly muon neutrinos from Fermilab, Illinois towards Ash River, in northern Minnesota. The experiment consists of two detectors placed 809 km apart, both about 14 mrad off-axis from the beam center. The detectors, one near and one far, were each formed from plastic extrusions filled with a liquid scintillator, making them functionally identical, which largely cancels key flux and cross-section systematic uncertainties. The three-flavor long-baseline search probes undetermined physics such as the neutrino mass hierarchy (ordering), CP violation in the lepton sector, and the octant of $\theta_{23}$ (the large mixing angle). The analysis to extract these parameters studies neutrino interactions in each detector to observe the disappearance of muon neutrinos and the appearance of electron neutrinos, due to oscillations. I will present the latest results from NOvA, based on the combined neutrino and antineutrino beam mode datasets, collected up to March 2020, and briefly discuss the future reach of the experiment.

Primary author

Ashley Back (Indiana University)

Presentation Materials

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