Abstract

JSNS2 (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of ν¯μ→ν¯e 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 ν¯e signal in a sterile neutrino search. In addition, in order to demonstrate future prospects of the JSNS2 experiment, possible pulse shape discrimination improvements towards reducing cosmic ray induced fast neutron background are described.

Details

Title
Characterization of the correlated background for a sterile neutrino search using the first dataset of the JSNS2 experiment
Author
Hino, Y 1   VIAFID ORCID Logo  ; Ajimura, S 2 ; Cheoun, M K 3 ; Choi, J H 4 ; Dodo, T 5 ; Furuta, H 1 ; Goh, J 6 ; Haga, K 7 ; Harada, M 7 ; Hasegawa, S 8 ; Hiraiwa, T 2 ; Hwang, W 6 ; Jang, H I 9 ; Jang, J S 10 ; Jeon, H 11 ; Jeon, S 11 ; Joo, K K 12 ; Jordan, J R 13 ; Jung, D E 11 ; Kang, S K 14 ; Kasugai, Y 7 ; Kawasaki, T 15 ; Kim, E J 16 ; Kim, J Y 12 ; Kim, S B 11 ; Kim, W 17 ; Kinoshita, H 7 ; Konno, T 15 ; Lee, C Y 3 ; Lee, D H 18 ; Lee, S 6 ; Lim, I T 12 ; Little, C 13 ; Marzec, E 13 ; Maruyama, T 18 ; Masuda, S 7 ; Meigo, S 7 ; Monjushiro, S 18 ; Moon, D H 12 ; Nakano, T 2 ; Niiyama, M 19 ; Nishikawa, K 18 ; Nomachi, M 2 ; Pac, M Y 4 ; Park, J S 18 ; Park, R G 12 ; Peeters S J M 20 ; Ray, H 21 ; Rott, C 22 ; Sakai, K 7 ; Sakamoto, S 7 ; Shima, T 2 ; Shin, C D 12 ; Spitz, J 13 ; Suekane, F 1 ; Sugaya, Y 2 ; Suzuya, K 7 ; Taira, M 18 ; Ujiie, R 1 ; Yamaguchi, Y 7 ; Yeh, M 23 ; Yeo, I S 4 ; Yoo, C 6 ; Yu I 11 

1  Tohoku University, Research Center for Neutrino Science, Sendai, Japan (GRID:grid.69566.3a) (ISNI:0000 0001 2248 6943) 
2  Osaka University, Research Center for Nuclear Physics, Osaka, Japan (GRID:grid.136593.b) (ISNI:0000 0004 0373 3971) 
3  Soongsil University, Department of Physics, Seoul, Korea (GRID:grid.263765.3) (ISNI:0000 0004 0533 3568) 
4  Dongshin University, Laboratory for High Energy Physics, Chonnam, Korea (GRID:grid.412069.8) (ISNI:0000 0004 1770 4266) 
5  Tohoku University, Research Center for Neutrino Science, Sendai, Japan (GRID:grid.69566.3a) (ISNI:0000 0001 2248 6943); Advanced Science Research Center, JAEA, Tokai, Japan (GRID:grid.500402.3) 
6  Kyung Hee University, Department of Physics, Seoul, Korea (GRID:grid.289247.2) (ISNI:0000 0001 2171 7818) 
7  J-PARC Center, JAEA, Tokai, Japan (GRID:grid.472503.7) 
8  Advanced Science Research Center, JAEA, Tokai, Japan (GRID:grid.500402.3); J-PARC Center, JAEA, Tokai, Japan (GRID:grid.472503.7) 
9  Seoyeong University, Department of Fire Safety, Gwangju, Korea (GRID:grid.499337.3) (ISNI:0000 0004 0648 0228) 
10  Gwangju Institute of Science and Technology, Gwangju, Korea (GRID:grid.61221.36) (ISNI:0000 0001 1033 9831) 
11  Sungkyunkwan University, Department of Physics, Seoul, Korea (GRID:grid.264381.a) (ISNI:0000 0001 2181 989X) 
12  Chonnam National University, Department of Physics, Gwangju, Korea (GRID:grid.14005.30) (ISNI:0000 0001 0356 9399) 
13  University of Michigan, Ann Arbor, USA (GRID:grid.214458.e) (ISNI:0000000086837370) 
14  Seoul National University of Science and Technology, School of Liberal Arts, Seoul, Korea (GRID:grid.412485.e) (ISNI:0000 0000 9760 4919) 
15  Kitasato University, Department of Physics, Sagamihara, Japan (GRID:grid.410786.c) (ISNI:0000 0000 9206 2938) 
16  Jeonbuk National University, Division of Science Education, Jeonju, Korea (GRID:grid.411545.0) (ISNI:0000 0004 0470 4320) 
17  Kyungpook National University, Department of Physics, Daegu, Korea (GRID:grid.258803.4) (ISNI:0000 0001 0661 1556) 
18  High Energy Accelerator Research Organization (KEK), Tsukuba, Japan (GRID:grid.410794.f) (ISNI:0000 0001 2155 959X) 
19  Kyoto Sangyo University, Department of Physics, Kyoto, Japan (GRID:grid.258798.9) (ISNI:0000 0001 0674 6688) 
20  University of Sussex, Department of Physics and Astronomy, Brighton, UK (GRID:grid.12082.39) (ISNI:0000 0004 1936 7590) 
21  University of Florida, Gainesville, USA (GRID:grid.15276.37) (ISNI:0000 0004 1936 8091) 
22  Sungkyunkwan University, Department of Physics, Seoul, Korea (GRID:grid.264381.a) (ISNI:0000 0001 2181 989X); The University of Utah, Department of Physics, Salt Lake City, USA (GRID:grid.223827.e) (ISNI:0000 0001 2193 0096) 
23  Brookhaven National Laboratory, Upton, USA (GRID:grid.202665.5) (ISNI:0000 0001 2188 4229) 
Publication year
2022
Publication date
Apr 2022
Publisher
Springer Nature B.V.
ISSN
14346044
e-ISSN
14346052
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1140/epjc/s10052-022-10284-2
ProQuest document ID
2650971339
Copyright
© The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.