Estimation of atmospheric neutrinos background in Borexino

International Conference on Particle Physics and Astrophysics

Atroshchenko, V.S.^1 ; Litvinovich, E.A.^1,2

National Research Centre, Kurchatov Institute, Moscow

123182, Russia^1

National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe highway 31, Moscow

115409, Russia^2

关键词: Atmospheric neutrinos;    Atomic nuclei;    Beta decay;    Detailed modeling;    Interaction channel;    Neutrino detection;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/675/1/012014/pdf
DOI  :  10.1088/1742-6596/675/1/012014

来源: IOP

【 摘 要 】

Atmospheric neutrinos are produced in interactions of cosmic rays with atomic nuclei in the Earth's atmosphere. Although their flux is too low for studying in Borexino, atmospheric neutrinos act as a background for other processes. This paper presents the theoretical expected yield of atmospheric neutrinos in Borexino for three neutrino detection reactions: νp-ES, νe-ES and inverse, β-decay, as well as the status of Monte-Carlo simulation for ν12C interaction channels. Calculations were performed based on the only currently known detailed model of atmospheric neutrinos flux at very low energies.