$^{13}$C 核太阳中微子相互作用的首次证据
核实验
2026-01-16 v2 高能物理 - 实验
摘要
SNO+ 合作组织报告了 太阳中微子与 核相互作用的首次证据。该偶导电相互作用通过 进行，随后在 10 分钟的半衰期内经 完成。检测策略基于电子与正电子之间的延迟 coincidence。 presented 中微子的 Charged Current 信号证据，显著性为 4.2。利用 的天然丰度，5.7 吨 超过 231 天的数据被用于该分析。数据集中观察到 5.6 个事件，与预期的 个事件一致。该结果是 中微子与核相互作用的第二次实时测量，构成对 最低能量中微子相互作用的一般性观察。这使我们能够首次直接测量 CC 反应到 基态上的交叉截获，平均值为 cm，覆盖相关 太阳中微子能量范围。
引用
@article{arxiv.2508.20844,
title = {First Evidence of Solar Neutrino Interactions on $^{13}$C},
author = {SNO+ Collaboration and : and M. Abreu and A. Allega and M. R. Anderson and S. Andringa and D. M. Asner and D. J. Auty and A. Bacon and T. Baltazar and F. Barão and N. Barros and R. Bayes and E. W. Beier and A. Bialek and S. D. Biller and E. Caden and M. Chen and S. Cheng and B. Cleveland and D. Cookman and J. Corning and S. DeGraw and R. Dehghani and J. Deloye and M. M. Depatie and F. Di Lodovico and C. Dima and J. Dittmer and K. H. Dixon and M. S. Esmaeilian and E. Falk and N. Fatemighomi and R. Ford and A. Gaur and O. I. González-Reina and D. Gooding and C. Grant and J. Grove and S. Hall and A. L. Hallin and D. Hallman and M. R. Hebert and W. J. Heintzelman and R. L. Helmer and C. Hewitt and B. Hreljac and P. Huang and R. Hunt-Stokes and A. S. Inácio and C. J. Jillings and S. Kaluzienski and T. Kaptanoglu and J. Kladnik and J. R. Klein and L. L. Kormos and B. Krar and C. Kraus and C. B. Krauss and T. Kroupová and C. Lake and L. Lebanowski and C. Lefebvre and V. Lozza and M. Luo and S. Maguire and A. Maio and S. Manecki and J. Maneira and R. D. Martin and N. McCauley and A. B. McDonald and G. Milton and D. Morris and M. Mubasher and S. Naugle and L. J. Nolan and H. M. O'Keeffe and G. D. Orebi Gann and S. Ouyang and J. Page and S. Pal and K. Paleshi and W. Parker and L. J. Pickard and B. Quenallata and P. Ravi and A. Reichold and S. Riccetto and J. Rose and R. Rosero and J. Shen and J. Simms and P. Skensved and M. Smiley and R. Tafirout and B. Tam and J. Tseng and E. Vázquez-Jáuregui and J. G. C. Veinot and C. J. Virtue and F. Wang and M. Ward and J. J. Weigand and J. D. Wilson and J. R. Wilson and A. Wright and S. Yang and Z. Ye and M. Yeh and S. Yu and Y. Zhang and K. Zuber and A. Zummo},
journal= {arXiv preprint arXiv:2508.20844},
year = {2026}
}