Search for signatures of sterile neutrinos with Double Chooz

Almazan, H.; dos Anjos, J. C.; Appel, S.; Barriere, J. C.; Bekman, I; Bezerra, T. J. C.; Bezrukov, L.; Blucher, E.; Brugiere, T.; Buck, C.; Busenitz, J.; Cabrera, A.; Cerrada, M.; Chauveau, E.; Chimenti, P.; Corpace, O.; Dawson V, J.; Djurcic, Z.; Etenko, A.; Furuta, H.; Gil-Botella, I; Givaudan, A.; Gomez, H.; Gonzalez, L. F. G.; Goodman, M. C.; Hara, T.; Haser, Julia; Hellwig, D.; Heuermann, L.; Hourlier, A.; Ishitsuka, M.; Jochum, J.; Jollet, C.; Kale, K.; Kaneda, M.; Karakac, M.; Kawasaki, T.; Kemp, E.; de Kerret, H.; Kryn, D.; Kuze, M.; Lachenmaier, T.; Lane, C. E.; Lasserre, T.; Lastoria, C.; Lhuillier, D.; Lima Jr., H. P.; Lindner, M.; LoSecco, J. M.; Lubsandorzhiev, B.; Maeda, J.; Mariani, C.; Maricic, J.; Martino, J.; Matsubara, T.; Mention, G.; Meregaglia, A.; Miletic, T.; Milincic, R.; Minotti, A.; Navas-Nicolas, D.; Novella, P.; Oberauer, L.; Obolensky, M.; Onillon, A.; Oralbaev, A.; Palomares, C.; Pepe, I. M.; Pronost, G.; Reichenbacher, J.; Reinhold, B.; Schoenert, S.; Schoppmann, S.; Scola, L.; Sharankova, R.; Sibille, V; Sinev, V; Skorokhvatov, M.; Soldin, P.; Stahl, A.; Stancu, I; Stokes, L. F. F.; Suekane, F.; Sukhotin, S.; Sumiyoshi, T.; Sun, Y.; Veyssiere, C.; Viaud, B.; Vivier, M.; Wagner, S.; Wiebusch, C.; Yang, G.; Yermia, F.

doi:10.1140/epjc/s10052-021-09459-0

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Search for signatures of sterile neutrinos with Double Chooz

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Buck, C.
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Haser, Julia
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Lindner, M.
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Reinhold, B.
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Schoppmann, S.
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Citation

Almazan, H., dos Anjos, J. C., Appel, S., Barriere, J. C., Bekman, I., Bezerra, T. J. C., et al. (2021). Search for signatures of sterile neutrinos with Double Chooz. European Physical Journal C - Particles and Fields, 81(8): 775. doi:10.1140/epjc/s10052-021-09459-0.

Cite as: https://hdl.handle.net/21.11116/0000-000A-32B6-0

Abstract

We present a search for signatures of neutrino mixing of electron
anti-neutrinos with additional hypothetical sterile neutrino flavors
using the Double Chooz experiment. The search is based on data from 5
years of operation of Double Chooz, including 2 years in the
two-detector configuration. The analysis is based on a profile
likelihood, i.e. comparing the data to the model prediction of
disappearance in a data-to-data comparison of the two respective
detectors. The analysis is optimized for a model of three active and one
sterile neutrino. It is sensitive in the typical mass range 5 x 10(-3)
eV(2) less than or similar to Delta m(41)(2) less than or similar to 3 x
10(-1) eV(2) for mixing angles downto sin(2) 2 theta(14) greater than or
similar to 0.02. No significant disappearance additionally to the
conventional disappearance related to theta(13) is observed and
correspondingly exclusion bounds on the sterile mixing parameter
theta(14) as a function of Delta m(41)(2) are obtained.