Pulse Shape Discrimination in JSNS$^2$

T. Dodo; M. K. Cheoun; J. H. Choi; J. Y. Choi; J. Goh; K. Haga; M. Harada; S. Hasegawa; W. Hwang; T. Iida; H. I. Jang; J. S. Jang; 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; D. H. Lee; I. T. Lim; C. Little; E. Marzec; T. Maruyama; S. Masuda; S. Meigo; 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; Y. Takeuchi; Y. Yamaguchi; M. Yeh; I. S. Yeo; C. Yoo; I. Yu

doi:10.1093/ptep/ptaf016

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arXiv · 2404.03679

Pulse Shape Discrimination in JSNS$^2$

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Abstract

JSNS$^2$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of $\bar{\nu}_{\mu} \rightarrow \bar{\nu}_e$ appearance oscillations using neutrinos with muon decay-at-rest. For this search, rejecting cosmic-ray-induced neutron events by Pulse Shape Discrimination (PSD) is essential because the JSNS$^2$ detector is located above ground, on the third floor of the building. We have achieved 95$\%$ rejection of neutron events while keeping 90$\%$ of signal, electron-like events using a data driven likelihood method.

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T. Dodo, M. K. Cheoun, J. H. Choi, J. Y. Choi, J. Goh, K. Haga, M. Harada, S. Hasegawa, W. Hwang, T. Iida, H. I. Jang, J. S. Jang, 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, D. H. Lee, I. T. Lim, C. Little, E. Marzec, T. Maruyama, S. Masuda, S. Meigo, 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, Y. Takeuchi, Y. Yamaguchi, M. Yeh, I. S. Yeo, C. Yoo, I. Yu. 2024-03-28. Pulse Shape Discrimination in JSNS$^2$. https://doi.org/10.1093/ptep/ptaf016

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