JUNO sensitivity to low energy atmospheric neutrino spectra
Langue
en
Article de revue
Ce document a été publié dans
Eur.Phys.J.C. 2021, vol. 81, p. 10
Résumé en anglais
Atmospheric neutrinos are one of the most relevant natural neutrino sources that can be exploited to infer properties about cosmic rays and neutrino oscillations. The Jiangmen Underground Neutrino Observatory (JUNO) ...Lire la suite >
Atmospheric neutrinos are one of the most relevant natural neutrino sources that can be exploited to infer properties about cosmic rays and neutrino oscillations. The Jiangmen Underground Neutrino Observatory (JUNO) experiment, a 20 kton liquid scintillator detector with excellent energy resolution is currently under construction in China. JUNO will be able to detect several atmospheric neutrinos per day given the large volume. A study on the JUNO detection and reconstruction capabilities of atmospheric $\nu_e$ and $\nu_\mu$ fluxes is presented in this paper. In this study, a sample of atmospheric neutrino Monte Carlo events has been generated, starting from theoretical models, and then processed by the detector simulation. The excellent timing resolution of the 3'' PMT light detection system of JUNO detector and the much higher light yield for scintillation over Cherenkov allow to measure the time structure of the scintillation light with very high precision. Since $\nu_e$ and $\nu_\mu$ interactions produce a slightly different light pattern, the different time evolution of light allows to discriminate the flavor of primary neutrinos. A probabilistic unfolding method has been used, in order to infer the primary neutrino energy spectrum from the detector experimental observables. The simulated spectrum has been reconstructed between 100 MeV and 10 GeV, showing a great potential of the detector in the atmospheric low energy region.< Réduire
Mots clés en anglais
neutrino: atmosphere
neutrino: primary
neutrino: energy: low
neutrino: energy spectrum
neutrino: oscillation
neutrino: spectrum
neutrino: particle source
scintillation counter: liquid
JUNO
energy resolution
cosmic radiation
photomultiplier
observatory
neutrino: flux
neutrino/e: particle identification
neutrino/mu: particle identification
numerical calculations: Monte Carlo
resolution
Cherenkov
structure
flavor
data analysis method
proposed experiment
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