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Prospects for detecting the diffuse supernova neutrino background with JUNOстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Donchenko Georgy, Kouzakov Konstantin, Lokhov Alexey, Lubsandorzhiev Bayarto, Naumov Dmitry V., Popov Artyom, Stankevich Konstantin, Studenikin Alexander, Tkachev Igor, Vialkov Maxim, JUNO Collaboration
- Журнал: Journal of Cosmology and Astroparticle Physics
- Том: 2022
- Номер: 10
- Год издания: 2022
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 1
- Последняя страница: 26
- Номер статьи: 033
- DOI: 10.1088/1475-7516/2022/10/033
- Аннотация: We present the detection potential for the diffuse supernova neutrino background (DSNB) at the Jiangmen Underground Neutrino Observatory (JUNO), using the inverse beta-decay (IBD) detection channel on free protons. We employ the latest information on the DSNB flux predictions, and investigate in detail the background and its reduction for the DSNB search at JUNO. The atmospheric neutrino induced neutral current (NC) background turns out to be the most critical background, whose uncertainty is carefully evaluated from both the spread of model predictions and an envisaged in situ measurement. We also make a careful study on the background suppression with the pulse shape discrimination (PSD) and triple coincidence (TC) cuts. With latest DSNB signal predictions, more realistic background evaluation and PSD efficiency optimization, and additional TC cut, JUNO can reach the significance of 3 for 3 years of data taking, and achieve better than 5$\sigma$ after 10 years for a reference DSNB model. In the pessimistic scenario of non-observation, JUNO would strongly improve the limits and exclude a significant region of the model parameter space.
- Добавил в систему: Кузаков Константин Алексеевич