Angel Abusleme, Joao Pedro Athayde Marcondes de Andre, Andrej Babic, Anatael Cabrera, Christophe De La Taille, Timo Enqvist, Andrea Fabbri, Haonan Gan, Paul Hackspacher, Antonio Insolia, Kuo-Lun Jen, Leonidas Kalousis, Tobias Lachenmaier, Ints Mednieks, Massimiliano Nastasi, Lothar Oberauer, Hsiao-Ru Pan, Fazhi Qi, Muhammad Rajput, Andrey Sadovsky, Stefan van Waasen, Pablo Walker, Yufei Xi, Baojun Yan, Noman Zafar, others. Feasibility and physics potential of detecting 8B solar neutrinos at JUNO. Chinese Physics C, 45(2), 023004 pp. 2021.

Bibtex citāts:
author = {Angel Abusleme and Joao Pedro Athayde Marcondes de Andre and Andrej Babic and Anatael Cabrera and Christophe De La Taille and Timo Enqvist and Andrea Fabbri and Haonan Gan and Paul Hackspacher and Antonio Insolia and Kuo-Lun Jen and Leonidas Kalousis and Tobias Lachenmaier and Ints Mednieks and Massimiliano Nastasi and Lothar Oberauer and Hsiao-Ru Pan and Fazhi Qi and Muhammad Rajput and Andrey Sadovsky and Stefan van Waasen and Pablo Walker and Yufei Xi and Baojun Yan and Noman Zafar and others},
title = {Feasibility and physics potential of detecting 8B solar neutrinos at JUNO},
journal = {Chinese Physics C},
volume = {45},
issue = {2},
pages = {023004},
year = {2021}

Anotācija: The Jiangmen Underground Neutrino Observatory (JUNO) features a 20 kt multi-purpose underground liquid scintillator sphere as its main detector. Some of JUNO's features make it an excellent location for 8B solar neutrino measurements, such as its low-energy threshold, high energy resolution compared with water Cherenkov detectors, and much larger target mass compared with previous liquid scintillator detectors. In this paper, we present a comprehensive assessment of JUNO's potential for detecting 8B solar neutrinos via the neutrino-electron elastic scattering process. A reduced 2 MeV threshold for the recoil electron energy is found to be achievable, assuming that the intrinsic radioactive background 238U and 232Th in the liquid scintillator can be controlled to 10-17g/g. With ten years of data acquisition, approximately 60,000 signal and 30,000 background events are expected. This large sample will enable an examination of the distortion of the recoil electron spectrum that is dominated by the neutrino flavor transformation in the dense solar matter, which will shed new light on the inconsistency between the measured electron spectra and the predictions of the standard three-flavor neutrino oscillation framework. If Δm221= 4.8 × 10-5(7.5 × 10-5) eV, JUNO can provide evidence of neutrino oscillation in the Earth at approximately the 3σ (2σ) level by measuring the non-zero signal rate variation with respect to the solar zenith angle. Moreover, JUNO can simultaneously measure Δm221using 8B solar neutrinos to a precision of 20% or better, depending on the central value, and to sub-percent precision using reactor antineutrinos. A comparison of these two measurements from the same detector will help understand the current mild inconsistency between the value of Δm221reported by solar neutrino experiments and the KamLAND experiment. © 2021 Institute of Physics Publishing. All rights reserved.


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