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dc.contributor.authorAcero, Mario A.
dc.contributor.authorAdamson, P.
dc.contributor.authorAliaga, Leo
dc.contributor.authorAnfimov, Nikolay V.
dc.contributor.authorAntoshkin, A.
dc.contributor.authorMeyer, Holger
dc.contributor.authorMuether, Mathew
dc.contributor.authorSolomey, Nickolas
dc.date.accessioned2021-12-05T22:04:42Z
dc.date.available2021-12-05T22:04:42Z
dc.date.issued2021-11-11
dc.identifier.citationAcero, M. A., Adamson, P., Aliaga, L., Anfimov, N., Antoshkin, A., Arrieta-Diaz, E., . . . (The NOvA Collaboration). (2021). Search for active-sterile antineutrino mixing using neutral-current interactions with the NOvA experiment. Physical Review Letters, 127(20) doi:10.1103/PhysRevLett.127.201801en_US
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.urihttps://doi.org/10.1103/PhysRevLett.127.201801
dc.identifier.urihttps://soar.wichita.edu/handle/10057/22392
dc.descriptionPublished by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.en_US
dc.description.abstractThis 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 $12.51×10^{20}$ 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. No evidence for $\bar{\nu}_{\mu}\rightarrow\bar{\nu}_{s}$ oscillation is observed. Interpreting this result within 3 + 1 model, constraints are placed on the mixing angles ${\theta}_{24} < 25^{\circ}$ and ${\theta}_{34} < 32^{\circ}$ at the 90% C.L. for $0.05eV^{2} \leq \Delta m^{2}_{41} \leq 0.5,$ the range of mass splittings that produces no significant oscillations at the Near Detector. These are the first 3+1 confidence limits set using long-baseline accelerator antineutrinos.en_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.ispartofseriesPhysical Review Letters;Vol. 127, Iss. 20
dc.subjectBeam sourcesen_US
dc.subjectFar detectoren_US
dc.subjectFermilaben_US
dc.subjectLong base lineen_US
dc.subjectMixing angleen_US
dc.subjectModel constraintsen_US
dc.titleSearch for active-sterile antineutrino mixing using neutral-current interactions with the NOvA experimenten_US
dc.typeArticleen_US
dc.rights.holder© 2021 authors. Published by the American Physical Society.en_US


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