Precision measurement of neutrino oscillation parameters with 10 years of data from the NOvA experiment
| Title: | Precision measurement of neutrino oscillation parameters with 10 years of data from the NOvA experiment |
|---|---|
| Authors: | S Abubakar; MA Acero; B Acharya; P Adamson; N Anfimov; A Antoshkin; E Arrieta-Diaz; Lily Asquith; A Aurisano; D Azevedo; A Back; N Balashov; P Baldi; BA Bambah; Jeff Hartnell |
| Publication Year: | 2026 |
| Collection: | University of Sussex (US): Figshare |
| Subject Terms: | Engineering; Mathematical sciences; Physical sciences; Nuclear and plasma physics; Particle and high energy physics; NOvA Collaboration; 5106 Nuclear and Plasma Physics; 5107 Particle and High Energy Physics; 51 Physical Sciences; 01 Mathematical Sciences; 02 Physical Sciences; 09 Engineering; 40 Engineering; 49 Mathematical sciences |
| Description: | This Letter reports measurements of muon-neutrino disappearance and electron-neutrino appearance and the corresponding antineutrino processes between the two NOvA detectors in the NuMI neutrino beam. These measurements use a dataset with double the neutrino mode beam exposure that was previously analyzed, along with improved simulation and analysis techniques. A joint fit to these samples in the three-flavor paradigm results in the most precise single-experiment constraint on the atmospheric neutrino mass splitting, Δm322=2.431-0.034+0.036(-2.479-0.036+0.036)×10-3 eV2 if the mass ordering is normal (inverted). In both orderings, a region close to maximal mixing with sin2θ23=0.55-0.06+0.02 is preferred. The NOvA data show a mild preference for the normal mass ordering with a Bayes factor of 2.4 (corresponding to 70% of the posterior probability), indicating that the normal ordering is 2.4 times more probable than the inverted ordering. When incorporating a 2D Δm322-sin22θ13 constraint based on Daya Bay data, this preference strengthens to a Bayes factor of 6.6 (87%). |
| Document Type: | article in journal/newspaper |
| Language: | unknown |
| Relation: | 10779/uos.31792588.v1; https://figshare.com/articles/journal_contribution/Precision_measurement_of_neutrino_oscillation_parameters_with_10_years_of_data_from_the_NOvA_experiment/31792588 |
| Availability: | https://figshare.com/articles/journal_contribution/Precision_measurement_of_neutrino_oscillation_parameters_with_10_years_of_data_from_the_NOvA_experiment/31792588 |
| Rights: | CC BY 4.0 |
| Accession Number: | edsbas.43650B25 |
| Database: | BASE |