학술논문
Characterization of the correlated background for a sterile neutrino search using the first dataset of the JSNS $$^2$$ 2 experiment
Document Type
article
Author
Y. Hino; S. Ajimura; M. K. Cheoun; J. H. Choi; T. Dodo; H. Furuta; J. Goh; K. Haga; M. Harada; S. Hasegawa; T. Hiraiwa; W. Hwang; H. I. Jang; J. S. Jang; H. Jeon; S. Jeon; K. K. Joo; J. R. Jordan; D. E. Jung; S. K. Kang; Y. Kasugai; T. Kawasaki; E. J. Kim; J. Y. Kim; S. B. Kim; W. Kim; H. Kinoshita; T. Konno; C. Y. Lee; D. H. Lee; S. Lee; I. T. Lim; C. Little; E. Marzec; T. Maruyama; S. Masuda; S. Meigo; S. Monjushiro; D. H. Moon; T. Nakano; M. Niiyama; K. Nishikawa; M. Nomachi; M. Y. Pac; J. S. Park; R. G. Park; S. J. M. Peeters; H. Ray; C. Rott; K. Sakai; S. Sakamoto; T. Shima; C. D. Shin; J. Spitz; F. Suekane; Y. Sugaya; K. Suzuya; M. Taira; R. Ujiie; Y. Yamaguchi; M. Yeh; I. S. Yeo; C. Yoo; I. Yu
Source
European Physical Journal C: Particles and Fields, Vol 82, Iss 4, Pp 1-6 (2022)
Subject
Language
English
ISSN
1434-6052
Abstract
Abstract JSNS $$^2$$ 2 (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of $${\bar{\nu }}_{\mu } \rightarrow {\bar{\nu }}_{e}$$ 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 $${\bar{\nu }}_{e}$$ ν ¯ e signal in a sterile neutrino search. In addition, in order to demonstrate future prospects of the JSNS $$^2$$ 2 experiment, possible pulse shape discrimination improvements towards reducing cosmic ray induced fast neutron background are described.