JUNO sensitivity to <sup>7</sup>Be, pep, and CNO solar neutrinos
A. C. Abusleme Hoffman, Thomas Adam, S. Ahmad, Rizwan Ahmed, S. Aiello, Muhammad Akram, Abid Aleem, Tsagkarakis Alexandros, Fengpeng An, Qi An, Giuseppe Andronico, Н. Анфимов, V. Antonelli, Tatiana Antoshkina, Burin Asavapibhop, J. P. A. M. de André, Didier Auguste, Weidong Bai, Nikita Balashov, W. Baldini, Andrea Barresi, D. Basilico, E. Baussan, M. Bellato, Marco Beretta, Antonio Bergnoli, D. Bick, Lukas Bieger, S. Biktemerova, Thilo Birkenfeld, David Blum, S.C. Blyth, Anastasia Bolshakova, M. Bongrand, Clément Bordereau, D. Breton, A. Brigatti, R. Brugnera, Riccardo Bruno, A. Budano, José Busto, J. Busenitz, Barbara Caccianiga, Hao Cai, Xiao Cai, Yanke Cai, Zhiyan Cai, Stéphane Callier, Antonio Cammi, Agustín Campeny, Chuanya Cao, Guofu Cao, Jun Cao, R. Caruso, C. Cerna, Vanessa Cerrone, Chi Hou Chan, J. F. Chang, Yun Chang, Chao Chen, Guo-Ming Chen, Pingping Chen, Shaomin Chen, Yixue Chen, Yu Chen, Zhiyuan Chen, Zikang Chen, Jie Cheng, Yaping Cheng, Yu Cheng, A. Chepurnov, Alexey Chetverikov, D. Chiesa, P. Chimenti, Ziliang Chu, A. Chukanov, Gérard Claverie, Catia Clementi, Barbara Clerbaux, Marta Colomer Molla, Selma Conforti Di Lorenzo, Alberto Coppi, Daniele Corti, Simon Csakli, F. Dal Corso, Olivia Dalager, Jaydeep Datta, C. De La Taille, Zhi Deng, Ziyan Deng, Wilfried Depnering, Xiaoyu Ding, Xuefeng Ding, Yayun Ding, Bayu Dirgantara, Carsten Dittrich, Sergey Dmitrievsky, Tadeáš Dohnal, Dmitry Dolzhikov, Georgy Donchenko
Abstract
Abstract The Jiangmen Underground Neutrino Observatory (JUNO), the first multi-kton liquid scintillator detector, which is under construction in China, will have a unique potential to perform a real-time measurement of solar neutrinos well below the few MeV threshold typical of Water Cherenkov detectors. JUNO's large target mass and excellent energy resolution are prerequisites for reaching unprecedented levels of precision. In this paper, we provide estimation of the JUNO sensitivity to 7 Be, pep , and CNO solar neutrinos that can be obtained via a spectral analysis above the 0.45 MeV threshold. This study is performed assuming different scenarios of the liquid scintillator radiopurity, ranging from the most optimistic one corresponding to the radiopurity levels obtained by the Borexino experiment, up to the minimum requirements needed to perform the neutrino mass ordering determination with reactor antineutrinos — the main goal of JUNO. Our study shows that in most scenarios, JUNO will be able to improve the current best measurements on 7 Be, pep , and CNO solar neutrino fluxes. We also perform a study on the JUNO capability to detect periodical time variations in the solar neutrino flux, such as the day-night modulation induced by neutrino flavor regeneration in Earth, and the modulations induced by temperature changes driven by helioseismic waves.