利用改进的 IceCube DeepCore 校准与数据处理测量大气中微子混合
高能物理 - 实验
2023-08-09 v2 仪器与探测器
摘要
我们描述了 IceCube DeepCore 的新数据样本，并报告了使用 2011–2019 年记录数据获得的大气中微子振荡的最新测量。该样本在数据校准、探测器模拟和数据处理方面有显著改进，且分析受益于对系统不确定性的细致处理，自我们上次研究以来细节程度大幅提高。通过测量中微子味相对通量随其重建能量和到达方向的变化，我们约束大气中微子混合参数为 和 （假设正常质量顺序）。与先前结果相比两参数误差均减小 40%，这使其成为使用大气中微子的最精确振荡参数测量。我们的结果也与加速器产生的中微子束所得结果相容且互补，后者在中微子能量较低时获得并受不同不确定性来源影响。
引用
@article{arxiv.2304.12236,
title = {Measurement of Atmospheric Neutrino Mixing with Improved IceCube DeepCore Calibration and Data Processing},
author = {IceCube Collaboration and R. Abbasi and M. Ackermann and J. Adams and S. K. Agarwalla and J. A. Aguilar and M. Ahlers and J. M. Alameddine and N. M. Amin and K. Andeen and G. Anton and C. Argüelles and Y. Ashida and S. Athanasiadou and S. N. Axani and X. Bai and A. Balagopal V. and M. Baricevic and S. W. Barwick and V. Basu and R. Bay and J. J. Beatty and K. -H. Becker and J. Becker Tjus and J. Beise and C. Bellenghi and C. Benning and S. BenZvi and D. Berley and E. Bernardini and D. Z. Besson and G. Binder and E. Blaufuss and S. Blot and F. Bontempo and J. Y. Book and C. Boscolo Meneguolo and S. Böser and O. Botner and J. Böttcher and E. Bourbeau and J. Braun and B. Brinson and J. Brostean-Kaiser and R. T. Burley and R. S. Busse and D. Butterfield and M. A. Campana and K. Carloni and E. G. Carnie-Bronca and S. Chattopadhyay and N. Chau and C. Chen and Z. Chen and D. Chirkin and S. Choi and B. A. Clark and L. Classen and A. Coleman and G. H. Collin and A. Connolly and J. M. 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journal= {arXiv preprint arXiv:2304.12236},
year = {2023}
}