Borexino 对 CNO 中微子的首次探测
高能物理 - 实验
2021-05-20 v1
摘要
中微子是基本粒子，多年来作为来自太阳内部的根本信使而为人们所知。标准太阳模型给出了我们恒星中所有核过程的理论描述，预测所产生能量的约 99% 来自一系列称为“pp 链”的过程。近年来借助中微子已对这些过程进行了详细研究，这也得益于 Borexino 实验提供的重要测量。其余 1% 则预测来自一个独立的循环过程，称为“CNO 循环”。这一次要过程在理论上已被充分理解，但迄今逃避了任何直接观测。另一个基本方面是，CNO 循环确实是比太阳更高质量恒星中的主要核引擎。2020 年，得益于 Borexino 探测器近年来实现的空前放射性纯度和温度控制，终于宣布了首次对来自 CNO 循环的中微子的探测。这一里程碑结果确认了这种核聚变过程在我们宇宙中的存在。本文报道了所采用的探测器稳定化和分析技术的细节。
引用
@article{arxiv.2105.09211,
title = {First detection of CNO neutrinos with Borexino},
author = {G. Settanta and M. Agostini and K. Altenmüller and S. Appel and V. Atroshchenko and Z. Bagdasarian and D. Basilico and G. Bellini and J. Benziger and R. Biondi and D. Bravo and B. Caccianiga and F. Calaprice and A. Caminata and P. Cavalcante and A. Chepurnov and D. D'Angelo and S. Davini and A. Derbin and A. Di Giacinto and V. Di Marcello and X. F. Ding and A. Di Ludovico and L. Di Noto and I. Drachnev and A. Formozov and D. Franco and C. Galbiati and C. Ghiano and M. Giammarchi and A. Goretti and A. S. Göttel and M. Gromov and D. Guffanti and Aldo Ianni and Andrea Ianni and A. Jany and D. Jeschke and V. Kobychev and G. Korga and S. Kumaran and M. Laubenstein and E. Litvinovich and P. Lombardi and I. Lomskaya and L. Ludhova and G. Lukyanchenko and L. Lukyanchenko and I. Machulin and J. Martyn and E. Meroni and M. Meyer and L. Miramonti and M. Misiaszek and V. Muratova and B. Neumair and M. Nieslony and R. Nugmanov and L. Oberauer and V. Orekhov and F. Ortica and M. Pallavicini and L. Papp and L. Pelicci and Ö. Penek and L. Pietrofaccia and N. Pilipenko and A. Pocar and G. Raikov and M. T. Ranalli and G. Ranucci and A. Razeto and A. Re and M. Redchuk and A. Romani and N. Rossi and S. Schönert and D. Semenov and M. Skorokhvatov and A. Singhal and O. Smirnov and A. Sotnikov and Y. Suvorov and R. Tartaglia and G. Testera and J. Thurn and E. Unzhakov and F. L. Villante and A. Vishneva and R. B. Vogelaar and F. von Feilitzsch and M. Wojcik and M. Wurm and S. Zavatarelli and K. Zuber and G. Zuzel},
journal= {arXiv preprint arXiv:2105.09211},
year = {2021}
}
备注
7 pages, 3 figures. Contribution to the 2021 Neutrinos session of the 55th Rencontres de Moriond