https://doi.org/10.1140/epjc/s10052-021-09459-0
Regular Article - Experimental Physics
Search for signatures of sterile neutrinos with Double Chooz
1
III. Physikalisches Institut, RWTH Aachen University, 52056, Aachen, Germany
2
Department of Physics and Astronomy, University of Alabama, 35487, Tuscaloosa, AL, USA
3
Argonne National Laboratory, 60439, Argonne, IL, USA
4
APC Université de Paris CNRS Astroparticule et Cosmologie, 75006, Paris, France
5
Centro Brasileiro de Pesquisas Físicas, 22290-180, Rio de Janeiro, RJ, Brazil
6
Université de Bordeaux CNRS/IN2P3 CENBG, 33175, Gradignan, France
7
The Enrico Fermi Institute, The University of Chicago, 60637, Chicago, IL, USA
8
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas CIEMAT, 28040, Madrid, Spain
9
Department of Physics, Drexel University, 19104, Philadelphia, PA, USA
10
Institute of Nuclear Research of the Russian Academy of Sciences, 117312, Moscow, Russia
11
IRFU CEA Université Paris-Saclay, 91191, Gif-sur-Yvette, France
12
Department of Physics, Kitasato University, 252-0373, Sagamihara, Japan
13
Department of Physics, Kobe University, 657-8501, Kobe, Japan
14
NRC Kurchatov Institute, 123182, Moscow, Russia
15
Max-Planck-Institut für Kernphysik, 69117, Heidelberg, Germany
16
University of Notre Dame, 46556, Notre Dame, IN, USA
17
IPHC CNRS/IN2P3, Université de Strasbourg, 67037, Strasbourg, France
18
SUBATECH CNRS/IN2P3 Université de Nantes IMT-Atlantique, 44307, Nantes, France
19
Research Center for Neutrino Science, Tohoku University, 980-8578, Sendai, Japan
20
Department of Physics, Tokyo Institute of Technology, 152-8551, Tokyo, Japan
21
Department of Physics, Tokyo Metropolitan University, 192-0397, Tokyo, Japan
22
Physik Department, Technische Universität München, 85748, Garching, Germany
23
Kepler Center for Astro and Particle Physics, Universität Tübingen, 72076, Tübingen, Germany
24
Universidade Estadual de Campinas-UNICAMP, 13083-970, Campinas, SP, Brazil
25
Center for Neutrino Physics Virginia Tech, 24061, Blacksburg, VA, USA
26
LNCA Underground Laboratory IN2P3/CNRS-CEA, Chooz, France
27
Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, UK
28
IJC Laboratory CNRS/IN2P3, Université Paris-Saclay, Orsay, France
29
Universidade Estadual de Londrina, 86057-970, Londrina, Brazil
30
Massachusetts Institute of Technology, 02139, Cambridge, MA, USA
31
Tokyo University of Science Noda, Chiba, Japan
32
Physics and Astronomy Department, University of Hawaii at Manoa, Honolulu, HI, USA
33
High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan
34
Physics Department, Arcadia University, 19038, Glenside, PA, USA
35
LAPP CNRS/IN2P3, 74940, Annecy-le-Vieux, France
36
Instituto de Física Corpuscular IFIC (CSIC/UV), 46980, Paterna, Spain
37
Kamioka Observatory ICRR, University of Tokyo, 506-1205, Kamioka, Gifu, Japan
38
South Dakota School of Mines and Technology, 501 E. Saint Joseph St., 57701, Rapid City, SD, USA
39
State University of New York at Stony Brook, 11755, Stony Brook, NY, USA
40
University of California Department of Physics, 94720-7300, Berkeley, CA, USA
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Lawrence Berkeley National Laboratory, 94720-8153, Berkeley, CA, USA
da
wiebusch@physik.rwth-aachen.de
Received:
11
September
2020
Accepted:
13
July
2021
Published online:
29
August
2021
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 
for mixing angles down to 
. No significant disappearance additionally to the conventional disappearance related to 
is observed and correspondingly exclusion bounds on the sterile mixing parameter 
as a function of 
are obtained.
© The Author(s) 2021
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