Dual-baseline search for active-to-sterile neutrino oscillations in NOvA
Year: 2025
Type: article
Abstract: We report a search for neutrino oscillations to sterile neutrinos under a model with three active and one sterile neutrinos (3+1model). This analysis uses the NOvA detectors exposed to the NuMI beam, running in neutrino mode. The data exposure,13.6×1020protons on target, doubles that previously analyzed by NOvA, and the analysis is the first to use𝜈𝜇charged-current interactions in conjunction with neutral-current interactions. Neutrino samples in the near and far detectors are fitted simultaneously, enabling the search to be carried out over aΔ𝑚241range extending 2 (3) orders of magnitude above (below)1 eV2. NOvA finds no evidence for active-to-sterile neutrino oscillations under the3+1model at 90% confidence level. New limits are reported in multiple regions of parameter space, excluding some regions currently allowed by IceCube at 90% confidence level. We additionally set the most stringent limits for anomalous𝜈𝜏appearance forΔ𝑚241≤3 eV2.
Source: Figshare
Authors: Jeff Hartnell (4462147), Lily Asquith (20307339), EF Bannister (20824145), TJC Bezerra (20307045), Alex Booth (20824148), Robert Kralik (20824151), Jessica Lock (20824154), Wilf Shorrock (20307354)
Language: English
Topic: Neutrino Physics Research
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6990600039
FWCI:
Cites:
Cited by:
Related to: