학술논문
Measurement of neutrino-oxygen neutral-current quasi-elastic cross section using atmospheric neutrinos at Super-Kamiokande
Document Type
Working Paper
Author
Collaboration, Super-Kamiokande; Wan, L.; Abe, K.; Bronner, C.; Hayato, Y.; Ikeda, M.; Iyogi, K.; Kameda, J.; Kato, Y.; Kishimoto, Y.; Marti, Ll.; Miura, M.; Moriyama, S.; Mochizuki, T.; Nakahata, M.; Nakajima, Y.; Nakano, Y.; Nakayama, S.; Okada, T.; Okamoto, K.; Orii, A.; Pronost, G.; Sekiya, H.; Shiozawa, M.; Sonoda, Y.; Takeda, A.; Takenaka, A.; Tanaka, H.; Yano, T.; Akutsu, R.; Kajita, T.; Nishimura, Y.; Okumura, K.; Wang, R.; Xia, J.; Labarga, L.; Fernandez, P.; Blaszczyk, F. d. M.; Kachulis, C.; Kearns, E.; Raaf, J. L.; Stone, J. L.; Sussman, S.; Berkman, S.; Bian, J.; Griskevich, N. J.; Kropp, W. R.; Locke, S.; Mine, S.; Weatherly, P.; Smy, M. B.; Sobel, H. W.; Takhistov, V.; Ganezer, K. S.; Hill, J.; Kim, J. Y.; Lim, I. T.; Park, R. G.; Bodur, B.; Scholberg, K.; Walter, C. W.; Gonin, M.; Imber, J.; Mueller, Th. A.; Ishizuka, T.; Nakamura, T.; Jang, J. S.; Choi, K.; Learned, J. G.; Matsuno, S.; Litchfield, R. P.; Uchida, Y.; Wascko, M. O.; Calabria, N. F.; Catanesi, M. G.; Intonti, R. A.; Radicioni, E.; De Rosa, G.; Ali, A.; Collazuol, G.; Iacob, F.; Ludovici, L.; Cao, S.; Friend, M.; Hasegawa, T.; Ishida, T.; Kobayashi, T.; Nakadaira, T.; Nakamura, K.; Oyama, Y.; Sakashita, K.; Sekiguchi, T.; Tsukamoto, T.; Abe, KE.; Hasegawa, M.; Isobe, Y.; Miyabe, H.; Sugimoto, T.; Suzuki, A. T.; Takeuchi, Y.; Ashida, Y.; Hayashino, T.; Hirota, S.; Jiang, M.; Kikawa, T.; Mori, M.; Nakamura, KE.; Nakaya, T.; Wendell, R. A.; Anthony, L. H. V.; McCauley, N.; Pritchard, A.; Tsui, K. M.; Fukuda, Y.; Itow, Y.; Murrase, M.; Mijakowski, P.; Frankiewicz, K.; Jung, C. K.; Li, X.; Palomino, J. L.; Santucci, G.; Vilela, C.; Wilking, M. J.; Yanagisawa, C.; Fukuda, D.; Hagiwara, K.; Ishino, H.; Ito, S.; Koshio, Y.; Sakuda, M.; Takahira, Y.; Xu, C.; Kuno, Y.; Simpson, C.; Wark, D.; Di Lodovico, F.; Richards, B.; Sedgwick, S. Molina; Tacik, R.; Kim, S. B.; Thiesse, M.; Thompson, L.; Okazawa, H.; Choi, Y.; Nishijima, K.; Koshiba, M.; Yokoyama, M.; Goldsack, A.; Martens, K.; Murdoch, M.; Quilain, B.; Suzuki, Y.; Vagins, M. R.; Kuze, M.; Okajima, Y.; Yoshida, T.; Ishitsuka, M.; Martin, J. F.; Nantais, C. M.; Tanaka, H. A.; Towstego, T.; Hartz, M.; Konaka, A.; de Perio, P.; Chen, S.; Minamino, A.
Source
Phys. Rev. D 99, 032005 (2019)
Subject
Language
Abstract
Neutral current (NC) interactions of atmospheric neutrinos on oxygen form one of the major backgrounds in the search for supernova relic neutrinos with water-based Cherenkov detectors. The NC channel is dominated by neutrino quasi-elastic (NCQE) scattering off nucleons inside $^{16}$O nuclei. In this paper we report the first measurement of NCQE cross section using atmospheric neutrinos at Super-Kamiokande (SK). The measurement used 2,778 live days of SK-IV data with a fiducial volume of 22.5 kiloton water. Within the visible energy window of 7.5-29.5 MeV, we observed $117$ events compared to the expected $71.9$ NCQE signal and $53.1$ background events. Weighted by the atmospheric neutrino spectrum from 160 MeV to 10 GeV, the flux averaged NCQE cross section is measured to be $(1.01\pm0.17(\text{stat.})^{+0.78}_{-0.30}(\text{sys.}))\times10^{-38}$ cm$^2$.
Comment: 11 pages, 9 figures, submitted to PRD
Comment: 11 pages, 9 figures, submitted to PRD