基于KATRIN 259天数据的最直接的中微子质量测量
核实验
2025-09-19 v1 高能物理 - 实验
摘要
中微子携带非零静止质量是证明基本粒子标准模型之外的物理学的证据。它们的绝对质量对从粒子物理到宇宙学都具有重要意义。本文报告了使用KATRIN实验对有效电中微子质量的搜索。KATRIN对氕燃衰变在运动学端点附近进行精密光谱分析。基于前五次中微子质量测量活动，我们得到的最佳拟合值为，结果给出在90%置信水平下的上限。凭借六倍于前述数据集的统计量，累计收集3600万电子，显著降低了背景水平并改进了系统不确定性，该结果将KATRIN的前一限制约 tightened 了近乎两倍。
引用
@article{arxiv.2406.13516,
title = {Direct neutrino-mass measurement based on 259 days of KATRIN data},
author = {M. Aker and D. Batzler and A. Beglarian and J. Behrens and J. Beisenkötter and M. Biassoni and B. Bieringer and Y. Biondi and F. Block and S. Bobien and M. Böttcher and B. Bornschein and L. Bornschein and T. S. Caldwell and M. Carminati and A. Chatrabhuti and S. Chilingaryan and B. A. Daniel and K. Debowski and M. Descher and D. Díaz Barrero and P. J. Doe and O. Dragoun and G. Drexlin and F. Edzards and K. Eitel and E. Ellinger and R. Engel and S. Enomoto and A. Felden and C. Fengler and C. Fiorini and J. A. Formaggio and C. Forstner and F. M. Fränkle and K. Gauda and A. S. Gavin and W. Gil and F. Glück and S. Grohmann and R. Grössle and R. Gumbsheimer and N. Gutknecht and V. Hannen and L. Hasselmann and N. Haußmann and K. Helbing and H. Henke and S. Heyns and S. Hickford and R. Hiller and D. Hillesheimer and D. Hinz and T. Höhn and A. Huber and A. Jansen and C. Karl and J. Kellerer and K. Khosonthongkee and M. Kleifges and M. Klein and J. Kohpeiß and C. Köhler and L. Köllenberger and A. Kopmann and N. Kovač and A. Kovalík and H. Krause and L. La Cascio and T. Lasserre and J. Lauer and T. Le and O. Lebeda and B. Lehnert and G. Li and A. Lokhov and M. Machatschek and M. Mark and A. Marsteller and E. L. Martin and C. Melzer and S. Mertens and S. Mohanty and J. Mostafa and K. Müller and A. Nava and H. Neumann and S. Niemes and A. Onillon and D. S. Parno and M. Pavan and U. Pinsook and A. W. P. Poon and J. M. Lopez Poyato and S. Pozzi and F. Priester and J. Ráliš and S. Ramachandran and R. G. H. Robertson and C. Rodenbeck and M. Röllig and C. Röttele and M. Ryšavý and R. Sack and A. Saenz and R. Salomon and P. Schäfer and M. Schlösser and K. Schlösser and L. Schlüter and S. Schneidewind and U. Schnurr and M. Schrank and J. Schürmann and A. Schütz and A. Schwemmer and A. Schwenck and M. Šefčík and D. Siegmann and F. Simon and F. Spanier and D. Spreng and W. Sreethawong and M. Steidl and J. Štorek and X. Stribl and M. Sturm and N. Suwonjandee and N. Tan Jerome and H. H. Telle and L. A. Thorne and T. Thümmler and S. Tirolf and N. Titov and I. Tkachev and K. Urban and K. Valerius and D. Vénos and C. Weinheimer and S. Welte and J. Wendel and C. Wiesinger and J. F. Wilkerson and J. Wolf and S. Wüstling and J. Wydra and W. Xu and S. Zadorozhny and G. Zeller},
journal= {arXiv preprint arXiv:2406.13516},
year = {2025}
}
备注
61 pages, 20 figures, 2 tables