首次KATRIN中微子质量测量的分析方法
高能物理 - 实验
2021-07-21 v3 宇宙学与河外天体物理
核实验
仪器与探测器
摘要
我们报告了卡尔斯鲁厄氚中微子（KATRIN）实验首次中微子质量测量的数据集、数据处理和详细分析技术，该实验通过分子氚的衰变运动学探测绝对中微子质量尺度。源是高度纯化的低温T气体。电子沿磁力线被引导至高分辨率积分谱仪进行能量分析。硅探测器计数高于谱仪能量阈值的电子，因此扫描阈值可精确测量高能谱尾。经过从分子末态分布到源中的非弹性散射再到电磁场的细微之处在内的详细理论研究、模拟和调试测量后，我们独立的盲分析使我们能够在90\%置信水平上设定中微子质量尺度的上限为1.1 eV。这一基于数周在降低源强度下运行且由统计不确定性主导的首个结果，比先前极限改善了近两倍。该结果为未来的KATRIN测量建立了分析框架，并为粒子理论和宇宙学提供了重要输入。
引用
@article{arxiv.2101.05253,
title = {Analysis methods for the first KATRIN neutrino-mass measurement},
author = {M. Aker and K. Altenmüller and A. Beglarian and J. Behrens and A. Berlev and U. Besserer and B. Bieringer and K. Blaum and F. Block and B. Bornschein and L. Bornschein and M. Böttcher and T. Brunst and T. S. Caldwell and L. La Cascio and S. Chilingaryan and W. Choi and D. Díaz Barrero and K. Debowski and M. Deffert and M. Descher and P. J. Doe and O. Dragoun and G. Drexlin and S. Dyba and F. Edzards and K. Eitel and E. Ellinger and R. Engel and S. Enomoto and M. Fedkevych and A. Felden and J. A. Formaggio and F. M. Fränkle and G. B. Franklin and F. Friedel and A. Fulst and K. Gauda and W. Gil and F. Glück and R. Grössle and R. Gumbsheimer and T. Höhn and V. Hannen and N. Haußmann and K. Helbing and S. Hickford and R. Hiller and D. Hillesheimer and D. Hinz and T. Houdy and A. Huber and A. Jansen and L. Köllenberger and C. Karl and J. Kellerer and L. Kippenbrock and M. Klein and A. Kopmann and M. Korzeczek and A. Kovalík and B. Krasch and H. Krause and T. Lasserre and T. L. Le and O. Lebeda and B. Lehnert and A. Lokhov and J. M. Lopez Poyato and K. Müller and M. Machatschek and E. Malcherek and M. Mark and A. Marsteller and E. L. Martin and C. Melzer and S. Mertens and S. Niemes and P. Oelpmann and A. Osipowicz and D. S. Parno and A. W. P. Poon and F. Priester and M. Röllig and C. Röttele and O. Rest and R. G. H. Robertson and C. Rodenbeck and M. Ryšavý and R. Sack and A. Saenz and A. Schaller and P. Schäfer and L. Schimpf and K. Schlösser and M. Schlösser and L. Schlüter and M. Schrank and B. Schulz and M. Šefčík and H. Seitz-Moskaliuk and V. Sibille and D. Siegmann and M. Slezák and F. Spanier and M. Steidl and M. Sturm and M. Sun and H. H. Telle and T. Thümmler and L. A. Thorne and N. Titov and I. Tkachev and N. Trost and D. Vénos and K. Valerius and A. P. Vizcaya Hernández and S. Wüstling and M. Weber and C. Weinheimer and C. Weiss and S. Welte and J. Wendel and J. F. Wilkerson and J. Wolf and W. Xu and Y. -R. Yen and S. Zadoroghny and G. Zeller},
journal= {arXiv preprint arXiv:2101.05253},
year = {2021}
}
备注
36 pages with 26 figures. Accepted to Phys. Rev. D