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Search for active-sterile neutrino mixing using neutral-current interactions in NOvA
Version 2 2023-06-12, 08:45
Version 1 2023-06-09, 08:43
journal contribution
posted on 2023-06-12, 08:45 authored by M Baird, T Blackburn, J P Davies, Jeff HartnellJeff Hartnell, D P Méndez, L Vinton, B Zamorano, The NOvA CollaborationWe report results from the first search for sterile neutrinos mixing with active neutrinos through a reduction in the rate of neutral-current interactions over a baseline of 810 km between the NOvA detectors. Analyzing a 14-kton detector equivalent exposure of 6.05 × 1020 protons-on-target in the NuMI beam at Fermilab, we observe 95 neutral-current candidates at the Far Detector compared with 83.5±9.7(stat)±9.4(syst) events predicted assuming mixing only occurs between active neutrino species. No evidence for ?µ ? ?s transitions is found. Interpreting these results within a 3+1 model, we place constraints on the mixing angles ?24 < 20.8° and ?34 < 31.2° at the 90% C.L. for 0.05 eV2 = ?m2 41 = 0.5 eV2, the range of mass splittings that produce no significant oscillations over the Near Detector baseline.
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Physical Review DISSN
2470-0010Publisher
American Physical SocietyExternal DOI
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7Volume
96Department affiliated with
- Physics and Astronomy Publications
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- Yes
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2017-11-07First Open Access (FOA) Date
2017-11-16First Compliant Deposit (FCD) Date
2017-11-07Usage metrics
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