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 νˉμ→νˉe 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 JSNS2 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.
@article{arxiv.2404.03679,
title = {Pulse Shape Discrimination in JSNS$^2$},
author = {T. Dodo and M. K. Cheoun and J. H. Choi and J. Y. Choi and J. Goh and K. Haga and M. Harada and S. Hasegawa and W. Hwang and T. Iida and H. I. Jang and J. S. Jang and K. K. Joo and D. E. Jung and S. K. Kang and Y. Kasugai and T. Kawasaki and E. J. Kim and J. Y. Kim and S. B. Kim and W. Kim and H. Kinoshita and T. Konno and D. H. Lee and I. T. Lim and C. Little and E. Marzec and T. Maruyama and S. Masuda and S. Meigo and D. H. Moon and T. Nakano and M. Niiyama and K. Nishikawa and M. Y. Pac and H. W. Park and J. S. Park and R. G. Park and S. J. M. Peeters and C. Rott and K. Sakai and S. Sakamoto and T. Shima and C. D. Shin and J. Spitz and F. Suekane and Y. Sugaya and K. Suzuya and Y. Takeuchi and Y. Yamaguchi and M. Yeh and I. S. Yeo and C. Yoo and I. Yu},
journal= {arXiv preprint arXiv:2404.03679},
year = {2025}
}
Comments
arXiv admin note: text overlap with arXiv:2111.07482, arXiv:2308.02722