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arXiv · 2212.08502

JUNO Sensitivity on Proton Decay $p\to \bar\nu K^+$ Searches

JUNO Collaboration·Angel Abusleme·Thomas Adam·Shakeel Ahmad·Rizwan Ahmed·Sebastiano Aiello·Muhammad Akram·Fengpeng An·Qi An·Giuseppe Andronico·Nikolay Anfimov·Vito Antonelli·Tatiana Antoshkina·Burin Asavapibhop·João Pedro Athayde Marcondes de André·Didier Auguste·Nikita Balashov·Wander Baldini·Andrea Barresi·Davide Basilico·Eric Baussan·Marco Bellato·Antonio Bergnoli·Thilo Birkenfeld·Sylvie Blin·David Blum·Simon Blyth·Anastasia Bolshakova·Mathieu Bongrand·Clément Bordereau·Dominique Breton·Augusto Brigatti·Riccardo Brugnera·Riccardo Bruno·Antonio Budano·Mario Buscemi·Jose Busto·Ilya Butorov·Anatael Cabrera·Barbara Caccianiga·Hao Cai·Xiao Cai·Yanke Cai·Zhiyan Cai·Riccardo Callegari·Antonio Cammi·Agustin Campeny·Chuanya Cao·Guofu Cao·Jun Cao·Rossella Caruso·Cédric Cerna·Jinfan Chang·Yun Chang·Pingping Chen·Po-An Chen·Shaomin Chen·Xurong Chen·Yi-Wen Chen·Yixue Chen·Yu Chen·Zhang Chen·Jie Cheng·Yaping Cheng·Alexey Chetverikov·Davide Chiesa·Pietro Chimenti·Artem Chukanov·Gérard Claverie·Catia Clementi·Barbara Clerbaux·Selma Conforti Di Lorenzo·Daniele Corti·Flavio Dal Corso·Olivia Dalager·Christophe De La Taille·Zhi Deng·Ziyan Deng·Wilfried Depnering·Marco Diaz·Xuefeng Ding·Yayun Ding·Bayu Dirgantara·Sergey Dmitrievsky·Tadeas Dohnal·Dmitry Dolzhikov·Georgy Donchenko·Jianmeng Dong·Evgeny Doroshkevich·Marcos Dracos·Frédéric Druillole·Ran Du·Shuxian Du·Stefano Dusini·Martin Dvorak·Timo Enqvist·Heike Enzmann·Andrea Fabbri·Ulrike Fahrendholz·Donghua Fan
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Abstract

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel.

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JUNO Collaboration, Angel Abusleme, Thomas Adam, Shakeel Ahmad, Rizwan Ahmed, Sebastiano Aiello, Muhammad Akram, Fengpeng An, Qi An, Giuseppe Andronico, Nikolay Anfimov, Vito Antonelli, Tatiana Antoshkina, Burin Asavapibhop, João Pedro Athayde Marcondes de André, Didier Auguste, Nikita Balashov, Wander Baldini, Andrea Barresi, Davide Basilico, Eric Baussan, Marco Bellato, Antonio Bergnoli, Thilo Birkenfeld, Sylvie Blin, David Blum, Simon Blyth, Anastasia Bolshakova, Mathieu Bongrand, Clément Bordereau, Dominique Breton, Augusto Brigatti, Riccardo Brugnera, Riccardo Bruno, Antonio Budano, Mario Buscemi, Jose Busto, Ilya Butorov, Anatael Cabrera, Barbara Caccianiga, Hao Cai, Xiao Cai, Yanke Cai, Zhiyan Cai, Riccardo Callegari, Antonio Cammi, Agustin Campeny, Chuanya Cao, Guofu Cao, Jun Cao, Rossella Caruso, Cédric Cerna, Jinfan Chang, Yun Chang, Pingping Chen, Po-An Chen, Shaomin Chen, Xurong Chen, Yi-Wen Chen, Yixue Chen, Yu Chen, Zhang Chen, Jie Cheng, Yaping Cheng, Alexey Chetverikov, Davide Chiesa, Pietro Chimenti, Artem Chukanov, Gérard Claverie, Catia Clementi, Barbara Clerbaux, Selma Conforti Di Lorenzo, Daniele Corti, Flavio Dal Corso, Olivia Dalager, Christophe De La Taille, Zhi Deng, Ziyan Deng, Wilfried Depnering, Marco Diaz, Xuefeng Ding, Yayun Ding, Bayu Dirgantara, Sergey Dmitrievsky, Tadeas Dohnal, Dmitry Dolzhikov, Georgy Donchenko, Jianmeng Dong, Evgeny Doroshkevich, Marcos Dracos, Frédéric Druillole, Ran Du, Shuxian Du, Stefano Dusini, Martin Dvorak, Timo Enqvist, Heike Enzmann, Andrea Fabbri, Ulrike Fahrendholz, Donghua Fan. 2022-12-16. JUNO Sensitivity on Proton Decay $p\to \bar\nu K^+$ Searches. https://doi.org/10.1088/1674-1137/ace9c6

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