https://doi.org/10.1140/epjc/s10052-022-10284-2
Regular Article - Experimental Physics
Characterization of the correlated background for a sterile neutrino search using the first dataset of the JSNS
experiment
1
Research Center for Neutrino Science, Tohoku University, Sendai, Miyagi, Japan
2
Research Center for Nuclear Physics, Osaka University, Osaka, Japan
3
Department of Physics, Soongsil University, 06978, Seoul, Korea
4
Laboratory for High Energy Physics, Dongshin University, 58245, Chonnam, Korea
5
Advanced Science Research Center, JAEA, Tokai, Ibaraki, Japan
6
Department of Physics, Kyung Hee University, 02447, Seoul, Korea
7
J-PARC Center, JAEA, Tokai, Ibaraki, Japan
8
Department of Fire Safety, Seoyeong University, 61268, Gwangju, Korea
9
Gwangju Institute of Science and Technology, 61005, Gwangju, Korea
10
Department of Physics, Sungkyunkwan University, Seoul, Gyeong Gi-do, Korea
11
Department of Physics, Chonnam National University, 61186, Gwangju, Korea
12
University of Michigan, 48109, Ann Arbor, MI, USA
13
School of Liberal Arts, Seoul National University of Science and Technology, 139-743, Seoul, Korea
14
Department of Physics, Kitasato University, 252-0373, Sagamihara, Kanagawa, Japan
15
Division of Science Education, Jeonbuk National University, 54896, Jeonju, Korea
16
Department of Physics, Kyungpook National University, 41566, Daegu, Korea
17
High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan
18
Department of Physics, Kyoto Sangyo University, Kyoto, Japan
19
Department of Physics and Astronomy, University of Sussex, Brighton, UK
20
University of Florida, 32611, Gainesville, FL, USA
21
Department of Physics, The University of Utah, 84112, Salt Lake City, UT, USA
22
Brookhaven National Laboratory, 11973-5000, Upton, NY, USA
Received:
14
November
2021
Accepted:
4
April
2022
Published online:
17
April
2022
JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of
appearance oscillations using muon decay-at-rest neutrinos. Before dedicated data taking in the first-half of 2021, we performed a commissioning run for 10 days in June 2020. Using the data obtained in this commissioning run, in this paper, we present an estimate of the correlated background which imitates the
signal in a sterile neutrino search. In addition, in order to demonstrate future prospects of the JSNS
experiment, possible pulse shape discrimination improvements towards reducing cosmic ray induced fast neutron background are described.
© The Author(s) 2022
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