Borexino 对太阳 CNO 循环中微子的灵敏度
高能物理 - 实验
2020-12-10 v3 太阳与恒星天体物理
仪器与探测器
摘要
太阳碳、氮、氧（CNO）聚变循环中发射的中微子是太阳中微子中的一个亚主导却至关重要的组分，其通量尚未被测量。位于意大利格兰萨索国家实验室（Laboratori Nazionali del Gran Sasso）的 Borexino 实验凭借探测器的放射纯度及对探测器本底的精确理解，拥有直接探测它们的独特机会。我们讨论了 Borexino 对 CNO 中微子的灵敏度，这基于我们为约束两个最相关本底源速率所采用的策略：来自太阳 pp 链的 pep 中微子，以及源于液体闪烁体中 Pb-210 本征污染的 Bi-210 β 衰变。假设高金属丰度标准太阳模型预测的 CNO 通量以及 1000 天×71.3 吨的曝光量，Borexino 对 CNO 中微子的中位灵敏度高于 3 sigma。在相同假设下，若对 Bi-210 相互作用速率独立估算的不确定度为 1.5 cpd/100t，则 CNO 中微子通量的预期实验不确定度为 23%。最后，我们评估了未来更精确测量 CNO 太阳中微子通量时，C 和 N 丰度的预期不确定度，以及高、低金属丰度标准太阳模型（HZ 和 LZ）之间的预期判别显著性。
引用
@article{arxiv.2005.12829,
title = {Sensitivity to neutrinos from the solar CNO cycle in Borexino},
author = {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 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 G. Settanta and M. Skorokhvatov 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:2005.12829},
year = {2020}
}
备注
16 pages, 12 figures