来自KATRIN第二次测量活动的改进eV尺度惰性中微子约束
高能物理 - 实验
2022-05-04 v1
摘要
我们展示了2019年KATRIN第二次测量活动中轻惰性中微子搜索的结果。接近标称活度下，分析了个氚电子，能量窗口向下延伸至氚端点keV以下eV。我们考虑具有三个活跃和一个惰性中微子味的框架。该分析对第四质量本征态eV和活跃到惰性混合敏感。由于未观测到惰性中微子信号，我们在% C.L.给出了和上改进的排除轮廓。我们的结果取代了Mainz和Troitsk实验的限制。此外，我们能在很大程度上排除反应堆反中微子异常和镓异常的较大解。后者最近被BEST合作组重申，并可由具有大混合的惰性中微子解释。虽然小的剩余解大多被短基线反应堆实验排除，KATRIN是通过稳健的谱形分析对大相关解敏感的唯一切进行中的实验室实验。
引用
@article{arxiv.2201.11593,
title = {Improved eV-scale Sterile-Neutrino Constraints from the Second KATRIN Measurement Campaign},
author = {M. Aker and D. Batzler and A. Beglarian and J. Behrens and A. Berlev and U. Besserer and B. Bieringer and F. Block and S. Bobien and B. Bornschein and L. Bornschein and M. Böttcher and T. Brunst and T. S. Caldwell and R. M. D. Carney and S. Chilingaryan and W. Choi 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 J. A. Formaggio and F. M. Fränkle and G. B. Franklin and F. Friedel and A. Fulst and K. Gauda and A. S. Gavin and W. Gil and F. Glück and R. Grössle and R. Gumbsheimer and V. Hannen and N. Haußmann and K. Helbing and S. Hickford and R. Hiller and D. Hillesheimer and D. Hinz and T. Höhn and T. Houdy and A. Huber and A. Jansen and C. Karl and J. Kellerer and M. Kleifges and M. Klein and C. Köhler and L. Köllenberger and A. Kopmann and M. Korzeczek and A. Kovalík and B. Krasch and H. Krause and L. La Cascio and T. Lasserre and T. L. Le and O. Lebeda and B. Lehnert and A. Lokhov and M. Machatschek and E. Malcherek and M. Mark and A. Marsteller and E. L. Martin and C. Melzer and S. Mertens and J. Mostafa and K. Müller and H. Neumann and S. Niemes and P. Oelpmann and D. S. Parno and A. W. P. Poon and J. M. L. Poyato and F. Priester and J. Ráliš and S. Ramachandran and R. G. H. Robertson and W. Rodejohann 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 L. Schimpf and M. Schlösser and K. Schlösser and L. Schlüter and S. Schneidewind and M. Schrank and A. Schwemmer and M. Šefčík and V. Sibille and D. Siegmann and M. Slezák and F. Spanier and M. Steidl and M. Sturm and H. H. Telle and L. A. Thorne and T. Thümmler and N. Titov and I. Tkachev and K. Urban and K. Valerius and D. Vénos and A. P. Vizcaya Hernández and C. Weinheimer and S. Welte and J. Wendel and M. Wetter and C. Wiesinger and J. F. Wilkerson and J. Wolf and S. Wüstling and J. Wydra and W. Xu and S. Zadoroghny and G. Zeller},
journal= {arXiv preprint arXiv:2201.11593},
year = {2022}
}
备注
14 pages, 8 figures, 2 tables