학술논문
Search for keV-scale sterile neutrinos with the first KATRIN data
Document Type
article
Author
M. Aker; D. Batzler; A. Beglarian; J. Behrens; A. Berlev; U. Besserer; B. Bieringer; F. Block; S. Bobien; B. Bornschein; L. Bornschein; M. Böttcher; T. Brunst; T. S. Caldwell; S. Chilingaryan; W. Choi; K. Debowski; M. Descher; D. Díaz Barrero; P. J. Doe; O. Dragoun; G. Drexlin; F. Edzards; K. Eitel; E. Ellinger; R. Engel; S. Enomoto; A. Felden; J. A. Formaggio; F. M. Fränkle; G. B. Franklin; F. Friedel; A. Fulst; K. Gauda; A. S. Gavin; W. Gil; F. Glück; R. Grössle; R. Gumbsheimer; V. Hannen; N. Haußmann; K. Helbing; S. Hickford; R. Hiller; D. Hillesheimer; D. Hinz; T. Höhn; T. Houdy; A. Huber; A. Jansen; C. Karl; J. Kellerer; M. Kleifges; M. Klein; C. Köhler; L. Köllenberger; A. Kopmann; M. Korzeczek; A. Kovalík; B. Krasch; H. Krause; L. La Cascio; T. Lasserre; T. L. Le; O. Lebeda; B. Lehnert; A. Lokhov; M. Machatschek; E. Malcherek; M. Mark; A. Marsteller; E. L. Martin; C. Melzer; S. Mertens; J. Mostafa; K. Müller; H. Neumann; S. Niemes; P. Oelpmann; D. S. Parno; A. W. P. Poon; J. M. L. Poyato; F. Priester; J. Ráliš; S. Ramachandran; R. G. H. Robertson; W. Rodejohann; C. Rodenbeck; M. Röllig; C. Röttele; M. Ryšavý; R. Sack; A. Saenz; R. Salomon; P. Schäfer; L. Schimpf; M. Schlösser; K. Schlösser; L. Schlüter; S. Schneidewind; M. Schrank; A. Schwemmer; M. Šefǧík; V. Sibille; D. Siegmann; M. Slezák; F. Spanier; M. Steidl; M. Sturm; H. H. Telle; L. A. Thorne; T. Thümmler; N. Titov; I. Tkachev; K. Urban; K. Valerius; D. Vénos; A. P. Vizcaya Hernández; C. Weinheimer; S. Welte; J. Wendel; M. Wetter; C. Wiesinger; J. F. Wilkerson; J. Wolf; S. Wüstling; J. Wydra; W. Xu; S. Zadoroghny; G. Zeller
Source
European Physical Journal C: Particles and Fields, Vol 83, Iss 8, Pp 1-12 (2023)
Subject
Language
English
ISSN
1434-6052
Abstract
Abstract In this work we present a keV-scale sterile-neutrino search with a low-tritium-activity data set of the KATRIN experiment, acquired in a commissioning run in 2018. KATRIN performs a spectroscopic measurement of the tritium $$\upbeta $$ β -decay spectrum with the main goal of directly determining the effective electron anti-neutrino mass. During this commissioning phase a lower tritium activity facilitated the measurement of a wider part of the tritium spectrum and thus the search for sterile neutrinos with a mass of up to $$1.6\, \textrm{keV}$$ 1.6 keV . We do not find a signal and set an exclusion limit on the sterile-to-active mixing amplitude of $$\sin ^2\theta < 5\times 10^{-4}$$ sin 2 θ < 5 × 10 - 4 ( $$95\%$$ 95 % C.L.) at a mass of 0.3 keV. This result improves current laboratory-based bounds in the sterile-neutrino mass range between 0.1 and 1.0 keV.