Электронный каталог

Статья

Acero, M.A.
Dual-Baseline Search for Active-to-Sterile Neutrino Oscillations in NOvA / M.A.Acero, N.Anfimov, A.Antoshkin, N.Balashov, A.Ivanova, I.Kakorin, A.Kalitkina, O.Klimov, L.Kolupaeva, A.Morozova, A.Olshevskiy, O.Samoylov, A.Sheshukov, [a.o.]. – Text : electronic // Physical Review Letters. – 2025. – Vol. 134, No. 8. – P. 081804. – URL: https://doi.org/10.1103/PhysRevLett.134.081804. – Bibliogr.: 65.

We report a search for neutrino oscillations to sterile neutrinos under a model with three active and one sterile neutrinos (3+1 model). This analysis uses the NOvA detectors exposed to the NuMI beam, running in neutrino mode. The data exposure, 13.6 × 10&sup(20) protons on target, doubles that previously analyzed by NOvA, and the analysis is the first to use 𝜈&sub(𝜇) charged-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 a Δ⁢𝑚*2&sub(41) range extending 2 (3) orders of magnitude above (below) 1  eV*2. NOvA finds no evidence for active-to-sterile neutrino oscillations under the 3+1 model 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 anomalous 𝜈𝜏 appearance for Δ⁢𝑚*2&sub(41) ≤ 3  eV*2.



ОИЯИ = ОИЯИ (JINR)2025
Спец.(статьи,препринты) = С 346.1а - Свойства нейтрино
Бюллетени = 15/025