e-μ Discrimination at High Energy in the JUNO Detector

Abstract

Cosmic Ray and neutrino oscillation physics can be studied by using atmospheric neutrinos. JUNO (Jiangmen Underground Neutrino Observatory) is a large liquid scintillator detector with low energy detection threshold and excellent energy resolution. The detector performances allow the atmospheric neutrino oscillation measurements. In this work, a discrimination algorithm for different reaction channels of neutrino-nucleon interactions in the JUNO liquid scintillator, in the GeV/sub-GeV energy region, is presented. The atmospheric neutrino flux is taken as reference, considering $\stackrel{(-)}{\hat{I}{½}_{\hat{I}}¼}$ and $\stackrel{(-)}{\hat{I}{½}_e}$. The different temporal behaviour of the classes of events have been exploited to build a time profile-based discrimination algorithm. The results show a good selection power for $\stackrel{(-)}{\hat{I}{½}_e}$ CC events, while the $\stackrel{(-)}{\hat{I}{½}_{\hat{I}}¼}$ CC component suffers of an important contamination from NC events at low energy, which is under study. Preliminary results are presented.

Proceeding for poster presented at the 7th Roma International Conference on AstroParticle Physics