Feasibility and physics potential of detecting 8B solar neutrinos at JUNO *
Authors: Abusleme Angel , Adam Thomas , Ahmad Shakeel , Aiello Sebastiano , Akram Muhammad , Ali Nawab , An Fengpeng , An Guangpeng , An Qi , Andronico Giuseppe , Anfimov Nikolay , Antonelli Vito , Antoshkina Tatiana , Asavapibhop Burin , de André João Pedro Athayde Marcondes , Auguste Didier , Babic Andrej , Baldini Wander , Barresi Andrea , Baussan Eric , Bellato Marco , Bergnoli Antonio , Bernieri Enrico , Biare David , Birkenfeld Thilo , Blin Sylvie , Blum David , Blyth Simon , Bolshakova Anastasia , Bongrand Mathieu , Bordereau Clément , Breton Dominique , Brigatti Augusto , Brugnera Riccardo , Bruno Riccardo , Budano Antonio , Buesken Max , Buscemi Mario , Busto Jose , Butorov Ilya , Cabrera Anatael , Cai Hao , Cai Xiao , Cai Yanke , Cai Zhiyan , Cammi Antonio , Campeny Agustin , Cao Chuanya , Cao Guofu , Cao Jun , Caruso Rossella , Cerna Cédric , Chang Jinfan , Chang Yun , Chen Pingping , Chen Po-An , Chen Shaomin , Chen Shenjian , Chen Xurong , Chen Yi-Wen , Chen Yixue , Chen Yu , Chen Zhang , Cheng Jie , Cheng Yaping , Chepurnov Alexander , Chiesa Davide , Chimenti Pietro , Chukanov Artem , Chuvashova Anna , Claverie Gérard , Clementi Catia , Clerbaux Barbara , Lorenzo Selma Conforti Di , Corti Daniele , Costa Salvatore , Corso Flavio Dal , Taille Christophe De La , Deng Jiawei , Deng Zhi , Deng Ziyan , Depnering Wilfried , Diaz Marco , Ding Xuefeng , Ding Yayun , Dirgantara Bayu , Dmitrievsky Sergey , Dohnal Tadeas , Donchenko Georgy , Dong Jianmeng , Dornic Damien , Doroshkevich Evgeny , Dracos Marcos , Druillole Frédéric , Du Shuxian , Dusini Stefano , Dvorak Martin , Enqvist Timo , Enzmann Heike , Fabbri Andrea , Fajt Lukas , Fan Donghua , Fan Lei , Fang Can , Fang Jian , Fargetta Marco , Fatkina Anna , Fedoseev Dmitry , Fekete Vladko , Feng Li-Cheng , Feng Qichun , Ford Richard , Formozov Andrey , Fournier Amélie , Gan Haonan , Gao Feng , Garfagnini Alberto , Göttel Alexandre , Genster Christoph , Giammarchi Marco , Giaz Agnese , Giudice Nunzio , Giuliani Franco , Gonchar Maxim , Gong Guanghua , Gong Hui , Gorchakov Oleg , Gornushkin Yuri , Grassi Marco , Grewing Christian , Gromov Maxim , Gromov Vasily , Gu Minghao , Gu Xiaofei , Gu Yu , Guan Mengyun , Guardone Nunzio , Gul Maria , Guo Cong , Guo Jingyuan , Guo Wanlei , Guo Xinheng , Guo Yuhang , Hackspacher Paul , Hagner Caren , Han Ran , Han Yang , He Miao , He Wei , Heinz Tobias , Hellmuth Patrick , Heng Yuekun , Herrera Rafael , Hong Daojin , Hor YuenKeung , Hou Shaojing , Hsiung Yee , Hu Bei-Zhen , Hu Hang , Hu Jianrun , Hu Jun , Hu Shouyang , Hu Tao , Hu Zhuojun , Huang Chunhao , Huang Guihong , Huang Hanxiong , Huang Qinhua , Huang Wenhao , Huang Xingtao , Huang Yongbo , Hui Jiaqi , Huo Wenju , Huss Cédric , Hussain Safeer , Insolia Antonio , Ioannisian Ara , Ioannisyan Daniel , Isocrate Roberto , Jen Kuo-Lun , Ji Xiaolu , Ji Xingzhao , Jia Huihui , Jia Junji , Jian Siyu , Jiang Di , Jiang Xiaoshan , Jin Ruyi , Jing Xiaoping , Jollet Cécile , Joutsenvaara Jari , Jungthawan Sirichok , Kalousis Leonidas , Kampmann Philipp , Kang Li , Karagounis Michael , Kazarian Narine , Khan Amir , Khan Waseem , Khosonthongkee Khanchai , Kinz Patrick , Korablev Denis , Kouzakov Konstantin , Krasnoperov Alexey , Krokhaleva Svetlana , Krumshteyn Zinovy , Kruth Andre , Kutovskiy Nikolay , Kuusiniemi Pasi , Lachenmaier Tobias , Landini Cecilia , Leblanc Sébastien , Lefevre Frederic , Lei Liping , Lei Ruiting , Leitner Rupert , Leung Jason , Li Demin , Li Fei , Li Fule , Li Haitao , Li Huiling , Li Jiaqi , Li Jin , Li Kaijie , Li Mengzhao , Li Nan , Li Nan , Li Qingjiang , Li Ruhui , Li Shanfeng , Li Shuaijie , Li Tao , Li Weidong , Li Weiguo , Li Xiaomei , Li Xiaonan , Li Xinglong , Li Yi , Li Yufeng , Li Zhibing , Li Ziyuan , Liang Hao , Liang Hao , Liang Jingjing , Liao Jiajun , Liebau Daniel , Limphirat Ayut , Limpijumnong Sukit , Lin Guey-Lin , Lin Shengxin , Lin Tao , Ling Jiajie , Lippi Ivano , Liu Fang , Liu Haidong , Liu Hongbang , Liu Hongjuan , Liu Hongtao , Liu Hu , Liu Hui , Liu Jianglai , Liu Jinchang , Liu Min , Liu Qian , Liu Qin , Liu Runxuan , Liu Shuangyu , Liu Shubin , Liu Shulin , Liu Xiaowei , Liu Yan , Lokhov Alexey , Lombardi Paolo , Lombardo Claudio , Loo Kai , Lu Chuan , Lu Haoqi , Lu Jingbin , Lu Junguang , Lu Shuxiang , Lu Xiaoxu , Lubsandorzhiev Bayarto , Lubsandorzhiev Sultim , Ludhova Livia , Luo Fengjiao , Luo Guang , Luo Pengwei , Luo Shu , Luo Wuming , Lyashuk Vladimir , Ma Qiumei , Ma Si , Ma Xiaoyan , Ma Xubo , Maalmi Jihane , Malyshkin Yury , Mantovani Fabio , Manzali Francesco , Mao Xin , Mao Yajun , M. Mari Stefano , Marini Filippo , Marium Sadia , Martellini Cristina , Martin-Chassard Gisele , Martini Agnese , Mayilyan Davit , Müller Axel , Mednieks Ints , Meng Yue , Meregaglia Anselmo , Meroni Emanuela , Meyhöfer David , Mezzetto Mauro , Miller Jonathan , Miramonti Lino , Monforte Salvatore , Montini Paolo , Montuschi Michele , Morozov Nikolay , Muralidharan Pavithra , Nastasi Massimiliano , Naumov Dmitry V. , Naumova Elena , Nemchenok Igor , Nikolaev Alexey , Ning Feipeng , Ning Zhe , Nunokawa Hiroshi , Oberauer Lothar , Ochoa-Ricoux Juan Pedro , Olshevskiy Alexander , Orestano Domizia , Ortica Fausto , Pan Hsiao-Ru , Paoloni Alessandro , Parkalian Nina , Parmeggiano Sergio , Payupol Teerapat , Pei Yatian , Pelliccia Nicomede , Peng Anguo , Peng Haiping , Perrot Frédéric , Petitjean Pierre-Alexandre , Petrucci Fabrizio , Piñeres Rico Luis Felipe , Pilarczyk Oliver , Popov Artyom , Poussot Pascal , Pratumwan Wathan , Previtali Ezio , Qi Fazhi , Qi Ming , Qian Sen , Qian Xiaohui , Qiao Hao , Qin Zhonghua , Qiu Shoukang , Rajput Muhammad , Ranucci Gioacchino , Raper Neill , Re Alessandra , Rebber Henning , Rebii Abdel , Ren Bin , Ren Jie , Rezinko Taras , Ricci Barbara , Robens Markus , Roche Mathieu , Rodphai Narongkiat , Romani Aldo , Roskovec Bedřich , Roth Christian , Ruan Xiangdong , Ruan Xichao , Rujirawat Saroj , Rybnikov Arseniy , Sadovsky Andrey , Saggese Paolo , Salamanna Giuseppe , Sanfilippo Simone , Sangka Anut , Sanguansak Nuanwan , Sawangwit Utane , Sawatzki Julia , Sawy Fatma , Schever Michaela , Schuler Jacky , Schwab Cédric , Schweizer Konstantin , Selivanov Dmitry , Selyunin Alexandr , Serafini Andrea , Settanta Giulio , Settimo Mariangela , Shahzad Muhammad , Sharov Vladislav , Shi Gang , Shi Jingyan , Shi Yongjiu , Shutov Vitaly , Sidorenkov Andrey , Šimkovic Fedor , Sirignano Chiara , Siripak Jaruchit , Sisti Monica , Slupecki Maciej , Smirnov Mikhail , Smirnov Oleg , Sogo-Bezerra Thiago , Songwadhana Julanan , Soonthornthum Boonrucksar , Sotnikov Albert , Sramek Ondrej , Sreethawong Warintorn , Stahl Achim , Stanco Luca , Stankevich Konstantin , Štefánik Dušan , Steiger Hans , Steinmann Jochen , Sterr Tobias , Stock Matthias Raphael , Strati Virginia , Studenikin Alexander , Sun Gongxing , Sun Shifeng , Sun Xilei , Sun Yongjie , Sun Yongzhao , Suwonjandee Narumon , Szelezniak Michal , Tang Jian , Tang Qiang , Tang Quan , Tang Xiao , Tietzsch Alexander , Tkachev Igor , Tmej Tomas , Treskov Konstantin , Triossi Andrea , Troni Giancarlo , Trzaska Wladyslaw , Tuve Cristina , van Waasen Stefan , Boom Johannes van den , Vanroyen Guillaume , Vassilopoulos Nikolaos , Vedin Vadim , Verde Giuseppe , Vialkov Maxim , Viaud Benoit , Volpe Cristina , Vorobel Vit , Votano Lucia , Walker Pablo , Wang Caishen , Wang Chung-Hsiang , Wang En , Wang Guoli , Wang Jian , Wang Jun , Wang Kunyu , Wang Lu , Wang Meifen , Wang Meng , Wang Meng , Wang Ruiguang , Wang Siguang , Wang Wei , Wang Wei , Wang Wenshuai , Wang Xi , Wang Xiangyue , Wang Yangfu , Wang Yaoguang , Wang Yi , Wang Yi , Wang Yifang , Wang Yuanqing , Wang Yuman , Wang Zhe , Wang Zheng , Wang Zhimin , Wang Zongyi , Watcharangkool Apimook , Wei Lianghong , Wei Wei , Wei Yadong , Wen Liangjian , Wiebusch Christopher , Wong Steven Chan-Fai , Wonsak Bjoern , Wu Diru , Wu Fangliang , Wu Qun , Wu Wenjie , Wu Zhi , Wurm Michael , Wurtz Jacques , Wysotzki Christian , Xi Yufei , Xia Dongmei , Xie Yuguang , Xie Zhangquan , Xing Zhizhong , Xu Benda , Xu Donglian , Xu Fanrong , Xu Jilei , Xu Jing , Xu Meihang , Xu Yin , Xu Yu , Yan Baojun , Yan Xiongbo , Yan Yupeng , Yang Anbo , Yang Changgen , Yang Huan , Yang Jie , Yang Lei , Yang Xiaoyu , Yang Yifan , Yao Haifeng , Yasin Zafar , Ye Jiaxuan , Ye Mei , Yegin Ugur , Yermia Frédéric , Yi Peihuai , Yin Xiangwei , You Zhengyun , Yu Boxiang , Yu Chiye , Yu Chunxu , Yu Hongzhao , Yu Miao , Yu Xianghui , Yu Zeyuan , Yuan Chengzhuo , Yuan Ying , Yuan Zhenxiong , Yuan Ziyi , Yue Baobiao , Zafar Noman , Zambanini Andre , Zeng Pan , Zeng Shan , Zeng Tingxuan , Zeng Yuda , Zhan Liang , Zhang Feiyang , Zhang Guoqing , Zhang Haiqiong , Zhang Honghao , Zhang Jiawen , Zhang Jie , Zhang Jingbo , Zhang Peng , Zhang Qingmin , Zhang Shiqi , Zhang Tao , Zhang Xiaomei , Zhang Xuantong , Zhang Yan , Zhang Yinhong , Zhang Yiyu , Zhang Yongpeng , Zhang Yuanyuan , Zhang Yumei , Zhang Zhenyu , Zhang Zhijian , Zhao Fengyi , Zhao Jie , Zhao Rong , Zhao Shujun , Zhao Tianchi , Zheng Dongqin , Zheng Hua , Zheng Minshan , Zheng Yangheng , Zhong Weirong , Zhou Jing , Zhou Li , Zhou Nan , Zhou Shun , Zhou Xiang , Zhu Jiang , Zhu Kejun , Zhuang Honglin , Zong Liang , Zou Jiaheng , (JUNO Collaboration)  
Published: January 2021

Abstract
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

B 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

B 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

U and

Th in the liquid scintillator can be controlled to 10

g/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

eV

, JUNO can provide evidence of neutrino oscillation in the Earth at approximately the 3

(2

) level by measuring the non-zero signal rate variation with respect to the solar zenith angle. Moreover, JUNO can simultaneously measure

using

B 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

reported by solar neutrino experiments and the KamLAND experiment.