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  • Joint Measurement of the 23...
    Almazán, H.; Andriamirado, M.; Balantekin, A.  B.; Band, H.  R.; Bass, C.  D.; Bergeron, D.  E.; Bernard, L.; Blanchet, A.; Bonhomme, A.; Bowden, N.  S.; Bryan, C.  D.; Buck, C.; Classen, T.; Conant, A.  J.; Deichert, G.; del Amo Sanchez, P.; Delgado, A.; Diwan, M.  V.; Dolinski, M.  J.; El Atmani, I.; Erickson, A.; Foust, B.  T.; Gaison, J.  K.; Galindo-Uribarri, A.; Gilbert, C.  E.; Hans, S.; Hansell, A.  B.; Heeger, K.  M.; Heffron, B.; Jaffe, D.  E.; Jayakumar, S.; Ji, X.; Jones, D.  C.; Koblanski, J.; Kyzylova, O.; Labit, L.; Lamblin, J.; Lane, C.  E.; Langford, T.  J.; LaRosa, J.; Letourneau, A.; Lhuillier, D.; Licciardi, M.; Lindner, M.; Littlejohn, B.  R.; Lu, X.; Maricic, J.; Materna, T.; Mendenhall, M.  P.; Meyer, A.  M.; Milincic, R.; Mueller, P.  E.; Mumm, H.  P.; Napolitano, J.; Neilson, R.; Nikkel, J.  A.; Nour, S.; Palomino, J.  L.; Pessard, H.; Pushin, D.  A.; Qian, X.; Réal, J. -S.; Ricol, J. -S.; Roca, C.; Rogly, R.; Rosero, R.; Salagnac, T.; Savu, V.; Schoppmann, S.; Searles, M.; Sergeyeva, V.; Soldner, T.; Stutz, A.; Surukuchi, P.  T.; Tyra, M.  A.; Varner, R.  L.; Venegas-Vargas, D.; Vialat, M.; Weatherly, P.  B.; White, C.; Wilhelmi, J.; Woolverton, A.; Yeh, M.; Zhang, C.; Zhang, X.

    Physical review letters, 02/2022, Volume: 128, Issue: 8
    Journal Article

    The PROSPECT and STEREO collaborations present a combined measurement of the pure 235U antineutrino spectrum, without site specific corrections or detector-dependent effects. The spectral measurements of the two highest precision experiments at research reactors are found to be compatible with χ2/ndf = 24.1/21, allowing a joint unfolding of the prompt energy measurements into antineutrino energy. This $\bar{ν}_e$ energy spectrum is provided to the community, and an excess of events relative to the Huber model is found in the 5-6 MeV region. When a Gaussian bump is fitted to the excess, the data-model χ2 value is improved, corresponding to a 2.4σ significance.