학술논문
Study on the accidental background of the JSNS $$^2$$ 2 experiment
Document Type
article
Author
D. H. Lee; S. Ajimura; M. K. Cheoun; J. H. Choi; J. Y. Choi; T. Dodo; 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; 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; 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. Y. Pac; H. W. Park; J. S. Park; R. G. Park; S. J. M. Peeters; C. Rott; K. Sakai; S. Sakamoto; T. Shima; C. D. Shin; J. Spitz; F. Suekane; Y. Sugaya; K. Suzuya; M. Taira; Y. Yamaguchi; M. Yeh; I. S. Yeo; C. Yoo; I. Yu
Source
European Physical Journal C: Particles and Fields, Vol 84, Iss 4, Pp 1-6 (2024)
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 searches 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. The JSNS $$^2$$ 2 experiment performed data taking from 2021. In this manuscript, a study of the accidental background is presented. The rate of the accidental background is ( $$9.29\pm 0.39) \times 10^{-8}$$ 9.29 ± 0.39 ) × 10 - 8 /spill with 0.75 MW beam power and comparable to the expected number of signal events.