Publications

This Letter reports a search for charge-parity (CP) symmetry violating non-standard interactions (NSI) of neutrinos with matter using the NOvA Experiment, and examines their effects on the determination of the standard oscillation parameters.

M. A. Acero et al. (NOvA Collaboration)

arXiv:2403.07266 - Submitted 12 Mar 2024

NOvA is a long-baseline neutrino oscillation experiment that measures oscillations in charged-current 𝜈_𝜇→𝜈_𝜇 (disappearance) and 𝜈_𝜇→𝜈_𝑒 (appearance) channels, and their antineutrino counterparts, using neutrinos of energies around 2 GeV over a distance of 810 km. In this work we reanalyze the dataset first examined in our previous paper Phys. Rev. D 106, 032004 (2022) using an alternative statistical approach based on Bayesian Markov chain Monte Carlo. We measure oscillation parameters consistent with the previous results.

M. A. Acero et al. (NOvA Collaboration)

Phys. Rev. D 110, 012005 – Published 10 July 2024

This Letter reports results from the first long-baseline search for sterile antineutrinos mixing in an accelerator-based antineutrino-dominated beam. The rate of neutral-current interactions in the two NOvA detectors, at distances of 1 and 810 km from the beam source, is analyzed using an exposure of 12.51×10²⁰ protons-on-target from the NuMI beam at Fermilab running in antineutrino mode. A total of 121 of neutral-current candidates are observed at the far detector, compared to a prediction of 122 ±11⁢ (stat.) ±15⁢ (syst.) assuming mixing only between three active flavors.

M. A. Acero et al. (NOvA Collaboration)

Phys. Rev. Lett. 127, 201801 – Published 11 November 2021