Search for active-sterile antineutrino mixing using neutral-current interactions with the NOvA experiment
dc.creator | Acero Ortega, Mario A. | |
dc.creator | Adamson, P. | |
dc.creator | Asquith, L. | |
dc.creator | Anfimov, Nikolay | |
dc.creator | Antoshkin, A. | |
dc.creator | Arrieta Diaz, Enrique | |
dc.creator | Asquith, Lily | |
dc.creator | Aurisano, Adam | |
dc.creator | Back, A. | |
dc.creator | Backhouse, C. | |
dc.creator | Gomes, Ricardo Avelino | |
dc.date.accessioned | 2023-05-22T15:41:01Z | |
dc.date.available | 2023-05-22T15:41:01Z | |
dc.date.issued | 2021 | |
dc.description.abstract | 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 11ðstat:Þ 15ðsyst:Þ assuming mixing only between three active flavors. No evidence for ¯νμ → ¯νs oscillation is observed. Interpreting this result within a 3 þ 1 model, constraints are placed on the mixing angles θ24 < 25° and θ34 < 32° at the 90% C.L. for 0.05 eV2 ≤ Δm2 41 ≤ 0.5 eV2, the range of mass splittings that produces no significant oscillations at the near detector. These are the first 3 þ 1 confidence limits set using long-baseline accelerator antineutrinos. | pt_BR |
dc.identifier.citation | ACERO, M. A. et al. Search for active-sterile antineutrino mixing using neutral-current interactions with the NOvA experiment. Physical Review Letters Washington, v. 127, e201801, 2021. DOI: 10.1103/PhysRevLett.127.201801. Disponível em: https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.127.201801. Acesso em: 16 maio 2023. | pt_BR |
dc.identifier.doi | 10.1103/PhysRevLett.127.201801 | |
dc.identifier.issn | 0031-9007 | |
dc.identifier.issn | e- 1079-7114 | |
dc.identifier.uri | http://repositorio.bc.ufg.br/handle/ri/22600 | |
dc.language.iso | eng | pt_BR |
dc.publisher.country | Estados unidos | pt_BR |
dc.publisher.department | Instituto de Física - IF (RGM) | pt_BR |
dc.rights | Acesso Aberto | pt_BR |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Search for active-sterile antineutrino mixing using neutral-current interactions with the NOvA experiment | pt_BR |
dc.type | Artigo | pt_BR |
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