EPJ Web of Conferences (Jan 2019)

Search for light sterile neutrinos with the STEREO experiment

  • Almazán Helena,
  • Sanchez Pablo del Amo,
  • Bernard Laura,
  • Blanchet Adrien,
  • Bonhomme Aurélie,
  • Buck Christian,
  • Atmani Ilham El,
  • Favier Jean,
  • Haser Julia,
  • Hélaine Victor,
  • Kandzia Felix,
  • Kox Serge,
  • Lamblin Jacob,
  • Letourneau Alain,
  • Lhuillier David,
  • Lindner Manfred,
  • Manzanillas Luis,
  • Materna Thomas,
  • Minotti Alessandro,
  • Montanet François,
  • Pessard Henri,
  • Real Jean-Sébastien,
  • Roca Christian,
  • Salagnac Thomas,
  • Schoppmann Stefan,
  • Sergeyeva Viktoriya,
  • Soldner Torsten,
  • Stutz Anne,
  • Zsoldos Stephane,

DOI
https://doi.org/10.1051/epjconf/201921908001
Journal volume & issue
Vol. 219
p. 08001

Abstract

Read online

The stereo experiment is searching for a non-standard oscillation in the propagation of anti-neutrinos produced by a nuclear reactor which could be the sign for the existence of a sterile state of eV mass and the origin of the reactor anti-neutrino anomaly. In this paper, results from 66 days of reactor turned on and 138 days of reactor turned off are reported excluding large amplitude oscillations. A special focus is put on the data analysis and studies of correlated backgrounds. In particular the origin of the correlated background measured in reactor turned off periods is discussed. This background mainly originates from neutrons produced by cosmic radiation.