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Search for keV-scale sterile neutrinos with the first KATRIN data

  • 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
  • Kernforschungszentrum Karlsruhe
  • Institute for Nuclear Research of the Russian Academy of Sciences
  • University of Münster
  • Humanoid Technologies Lab (H2T)
  • Technical University of Munich
  • Max-Planck-Institut für Physik
  • University of North Carolina
  • Triangle Universities Nuclear Laboratory
  • Bergische Universität Wuppertal
  • Universidad Autónoma de Madrid
  • University of Washington
  • Nuclear Physics Institute of the Cas
  • Massachusetts Institute of Technology
  • Carnegie Mellon University
  • University Paris-Sud
  • Lawrence Berkeley National Laboratory
  • Max-Planck-Institut für Kernphysik
  • Humboldt-Universität zu Berlin
  • Heidelberg University
  • Oak Ridge National Laboratory

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

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 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 1.6keV . We do not find a signal and set an exclusion limit on the sterile-to-active mixing amplitude of sin 2θ< 5 × 10 - 4 (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.

Original languageEnglish
Article number763
JournalEuropean Physical Journal C
Volume83
Issue number8
DOIs
StatePublished - Aug 2023

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