KATRIN 通过直接运动学方法得到的改进中微子质量上限
高能物理 - 实验
2019-12-04 v1 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实验 KATRIN 在 2019 年春季首次为期四周的科学运行的中微子质量测量结果。来自高纯度气态分子氚源的 β 衰变电子由高分辨率 MAC-E 滤波器进行能量分析。对 18.57 keV 处运动学端点附近窄区间内的积分电子能谱进行拟合，得到有效中微子质量平方值为 eV。由此我们推导出中微子绝对质量尺度的上限为 1.1 eV（90 置信水平）。该值与 KATRIN 的灵敏度一致。它比先前运动学测量得到的质量极限改善了近一倍，并为结构形成的宇宙学研究提供了与模型无关的 inputs。
引用
@article{arxiv.1909.06048,
title = {An improved upper limit on the neutrino mass from a direct kinematic method by KATRIN},
author = {M. Aker and K. Altenmüller and M. Arenz and M. Babutzka and J. Barrett and S. Bauer and M. Beck and A. Beglarian and J. Behrens and T. Bergmann and U. Besserer and K. Blaum and F. Block and S. Bobien and K. Bokeloh and J. Bonn and B. Bornschein and L. Bornschein and H. Bouquet and T. Brunst and T. S. Caldwell and L. La Cascio and S. Chilingaryan and W. Choi and T. J. Corona and K. Debowski and M. Deffert and M. Descher and P. J. Doe and O. Dragoun and G. Drexlin and J. A. Dunmore and S. Dyba and F. Edzards and L. Eisenblätter and K. Eitel and E. Ellinger and R. Engel and S. Enomoto and M. Erhard and D. Eversheim and M. Fedkevych and A. Felden and S. Fischer and B. Flatt and J. A. Formaggio and F. M. Fränkle and G. B. Franklin and H. Frankrone and F. Friedel and D. Fuchs and A. Fulst and D. Furse and K. Gauda and H. Gemmeke and W. Gil and F. Glück and S. Görhardt and S. Groh and S. Grohmann and R. Grössle and R. Gumbsheimer and M. Ha Minh and M. Hackenjos and V. Hannen and F. Harms and J. Hartmann and N. Haußmann and F. Heizmann and K. Helbing and S. Hickford and D. Hilk and B. Hillen and D. Hillesheimer and D. Hinz and T. Höhn and B. Holzapfel and S. Holzmann and T. Houdy and M. A. Howe and A. Huber and A. Jansen and A. Kaboth and C. Karl and O. Kazachenko and J. Kellerer and N. Kernert and L. Kippenbrock and M. Kleesiek and M. Klein and C. Köhler and L. Köllenberger and A. Kopmann and M. Korzeczek and A. Kosmider and A. Kovalí and B. Krasch and M. Kraus and H. Krause and L. Kuckert and B. Kuffner and N. Kunka and T. Lasserre and T. L. Le and O. Lebeda and M. Leber and B. Lehnert and J. Letnev and F. Leven and S. Lichter and V. M. Lobashev and A. Lokhov and M. Machatschek and E. Malcherek and K. Müller and M. Mark and A. Marsteller and E. L. Martin and C. Melzer and A. Menshikov and S. Mertens and L. I. Minter and S. Mirz and B. Monreal and P. I. Morales Guzman and K. Müller and U. Naumann and W. Ndeke and H. Neumann and S. Niemes and M. Noe and N. S. Oblath and H. -W. Ortjohann and A. Osipowicz and B. Ostrick and E. Otten and D. S. Parno and D. G. Phillips and P. Plischke and A. Pollithy and A. W. P. Poon and J. Pouryamout and M. Prall and F. Priester and M. Röllig and C. Röttele and P. C. -O. Ranitzsch and O. Rest and R. Rinderspacher and R. G. H. Robertson and C. Rodenbeck and P. Rohr and Ch. Roll and S. Rupp and M. Rysavy and R. Sack and A. Saenz and P. Schäfer and L. Schimpf and K. Schlösser and M. Schlösser and L. Schlüter and H. Schön and K. Schönung and M. Schrank and B. Schulz and J. Schwarz and H. Seitz-Moskaliuk and W. Seller and V. Sibille and D. Siegmann and A. Skasyrskaya and M. Slezak and A. Spalek and F. Spanier and M. Steidl and N. Steinbrink and M. Sturm and M. Suesser and M. Sun and D. Tcherniakhovski and H. H. Telle and T. Thümmler and L. A. Thorne and N. Titov and I. Tkachev and N. Trost and K. Urban and D. Venos and K. Valerius and B. A. VanDevender and R. Vianden and A. P. Vizcaya Hernandez and B. L. Wall and S. Wüstling and M. Weber and C. Weinheimer and C. Weiss and S. Welte and J. Wendel and K. J. Wierman and J. F. Wilkerson and J. Wolf and W. Xu and Y. -R. Yen and M. Zacher and S. Zadorozhny and M. Zboril and G. Zeller},
journal= {arXiv preprint arXiv:1909.06048},
year = {2019}
}