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Title: Solar neutrino measurements in Super-Kamiokande-IV

Abstract

We report that upgraded electronics, improved water system dynamics, better calibration and analysis techniques allowed Super-Kamiokande-IV to clearly observe very low-energy B 8 solar neutrino interactions, with recoil electron kinetic energies as low as ~ 3.5 MeV . Super-Kamiokande-IV data-taking began in September of 2008; this paper includes data until February 2014, a total livetime of 1664 days. The measured solar neutrino flux is ( 2.308 ± 0.020 ( stat ) - 0.040 + 0.039 ( syst ) ) × 1 0 6 / ( cm 2 sec ) assuming no oscillations. The observed recoil electron energy spectrum is consistent with no distortions due to neutrino oscillations. An extended maximum likelihood fit to the amplitude of the expected solar zenith angle variation of the neutrino-electron elastic scattering rate in SK-IV results in a day/night asymmetry of ( - 3.6 ± 1.6 ( stat ) ± 0.6 ( syst ) ) % . The SK-IV solar neutrino data determine the solar mixing angle as sin 2 θ 12 = 0.327 - 0.031 + 0.026 , all SK solar data (SK-I, SK-II, SK III and SK-IV) measures this angle to be sin 2 θ 12 = 0.334 - 0.023 + 0.027 , the determined mass-squared splitting is Δ m 21 2 = 4.8 - 0.8 + 1.5 × 10 - 5 eV 2 .

Authors:
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Publication Date:
Research Org.:
Univ. of Hawaii, Honolulu, HI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Org.:
Super-Kamiokande Collaboration
OSTI Identifier:
1598644
Alternate Identifier(s):
OSTI ID: 1325610
Grant/Contract Number:  
SC0010504
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 94; Journal Issue: 5; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Particle mixing & oscillations; Neutrinos

Citation Formats

Abe, K., Haga, Y., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kishimoto, Y., Marti, Ll., Miura, M., Moriyama, S., Nakahata, M., Nakajima, T., Nakayama, S., Orii, A., Sekiya, H., Shiozawa, M., Sonoda, Y., Takeda, A., Tanaka, H., Takenaga, Y., Tasaka, S., Tomura, T., Ueno, K., Yokozawa, T., Akutsu, R., Irvine, T., Kaji, H., Kajita, T., Kametani, I., Kaneyuki, K., Lee, K. P., Nishimura, Y., McLachlan, T., Okumura, K., Richard, E., Labarga, L., Fernandez, P., Blaszczyk, F. d. M., Gustafson, J., Kachulis, C., Kearns, E., Raaf, J. L., Stone, J. L., Sulak, L. R., Berkman, S., Tobayama, S., Goldhaber, M., Bays, K., Carminati, G., Griskevich, N. J., Kropp, W. R., Mine, S., Renshaw, A., Smy, M. B., Sobel, H. W., Takhistov, V., Weatherly, P., Ganezer, K. S., Hartfiel, B. L., Hill, J., Keig, W. E., Hong, N., Kim, J. Y., Lim, I. T., Park, R. G., Akiri, T., Albert, J. B., Himmel, A., Li, Z., O’Sullivan, E., Scholberg, K., Walter, C. W., Wongjirad, T., Ishizuka, T., Nakamura, T., Jang, J. S., Choi, K., Learned, J. G., Matsuno, S., Smith, S. N., Friend, M., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Nakano, Y., Suzuki, A. T., Takeuchi, Y., Yano, T., Cao, S. V., Hayashino, T., Hiraki, T., Hirota, S., Huang, K., Ieki, K., Jiang, M., Kikawa, T., Minamino, A., Murakami, A., Nakaya, T., Patel, N. D., Suzuki, K., Takahashi, S., Wendell, R. A., Fukuda, Y., Itow, Y., Mitsuka, G., Muto, F., Suzuki, T., Mijakowski, P., Frankiewicz, K., Hignight, J., Imber, J., Jung, C. K., Li, X., Palomino, J. L., Santucci, G., Taylor, I., Vilela, C., Wilking, M. J., Yanagisawa, C., Fukuda, D., Ishino, H., Kayano, T., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Takeuchi, J., Yamaguchi, R., Kuno, Y., Tacik, R., Kim, S. B., Okazawa, H., Choi, Y., Ito, K., Nishijima, K., Koshiba, M., Totsuka, Y., Suda, Y., Yokoyama, M., Bronner, C., Calland, R. G., Hartz, M., Martens, K., Obayashi, Y., Suzuki, Y., Vagins, M. R., Nantais, C. M., Martin, J. F., de Perio, P., Tanaka, H. A., Konaka, A., Chen, S., Sui, H., Wan, L., Yang, Z., Zhang, H., Zhang, Y., Connolly, K., Dziomba, M., and Wilkes, R. J. Solar neutrino measurements in Super-Kamiokande-IV. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.94.052010.
Abe, K., Haga, Y., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kishimoto, Y., Marti, Ll., Miura, M., Moriyama, S., Nakahata, M., Nakajima, T., Nakayama, S., Orii, A., Sekiya, H., Shiozawa, M., Sonoda, Y., Takeda, A., Tanaka, H., Takenaga, Y., Tasaka, S., Tomura, T., Ueno, K., Yokozawa, T., Akutsu, R., Irvine, T., Kaji, H., Kajita, T., Kametani, I., Kaneyuki, K., Lee, K. P., Nishimura, Y., McLachlan, T., Okumura, K., Richard, E., Labarga, L., Fernandez, P., Blaszczyk, F. d. M., Gustafson, J., Kachulis, C., Kearns, E., Raaf, J. L., Stone, J. L., Sulak, L. R., Berkman, S., Tobayama, S., Goldhaber, M., Bays, K., Carminati, G., Griskevich, N. J., Kropp, W. R., Mine, S., Renshaw, A., Smy, M. B., Sobel, H. W., Takhistov, V., Weatherly, P., Ganezer, K. S., Hartfiel, B. L., Hill, J., Keig, W. E., Hong, N., Kim, J. Y., Lim, I. T., Park, R. G., Akiri, T., Albert, J. B., Himmel, A., Li, Z., O’Sullivan, E., Scholberg, K., Walter, C. W., Wongjirad, T., Ishizuka, T., Nakamura, T., Jang, J. S., Choi, K., Learned, J. G., Matsuno, S., Smith, S. N., Friend, M., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Nakano, Y., Suzuki, A. T., Takeuchi, Y., Yano, T., Cao, S. V., Hayashino, T., Hiraki, T., Hirota, S., Huang, K., Ieki, K., Jiang, M., Kikawa, T., Minamino, A., Murakami, A., Nakaya, T., Patel, N. D., Suzuki, K., Takahashi, S., Wendell, R. A., Fukuda, Y., Itow, Y., Mitsuka, G., Muto, F., Suzuki, T., Mijakowski, P., Frankiewicz, K., Hignight, J., Imber, J., Jung, C. K., Li, X., Palomino, J. L., Santucci, G., Taylor, I., Vilela, C., Wilking, M. J., Yanagisawa, C., Fukuda, D., Ishino, H., Kayano, T., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Takeuchi, J., Yamaguchi, R., Kuno, Y., Tacik, R., Kim, S. B., Okazawa, H., Choi, Y., Ito, K., Nishijima, K., Koshiba, M., Totsuka, Y., Suda, Y., Yokoyama, M., Bronner, C., Calland, R. G., Hartz, M., Martens, K., Obayashi, Y., Suzuki, Y., Vagins, M. R., Nantais, C. M., Martin, J. F., de Perio, P., Tanaka, H. A., Konaka, A., Chen, S., Sui, H., Wan, L., Yang, Z., Zhang, H., Zhang, Y., Connolly, K., Dziomba, M., & Wilkes, R. J. Solar neutrino measurements in Super-Kamiokande-IV. United States. https://doi.org/10.1103/PhysRevD.94.052010
Abe, K., Haga, Y., Hayato, Y., Ikeda, M., Iyogi, K., Kameda, J., Kishimoto, Y., Marti, Ll., Miura, M., Moriyama, S., Nakahata, M., Nakajima, T., Nakayama, S., Orii, A., Sekiya, H., Shiozawa, M., Sonoda, Y., Takeda, A., Tanaka, H., Takenaga, Y., Tasaka, S., Tomura, T., Ueno, K., Yokozawa, T., Akutsu, R., Irvine, T., Kaji, H., Kajita, T., Kametani, I., Kaneyuki, K., Lee, K. P., Nishimura, Y., McLachlan, T., Okumura, K., Richard, E., Labarga, L., Fernandez, P., Blaszczyk, F. d. M., Gustafson, J., Kachulis, C., Kearns, E., Raaf, J. L., Stone, J. L., Sulak, L. R., Berkman, S., Tobayama, S., Goldhaber, M., Bays, K., Carminati, G., Griskevich, N. J., Kropp, W. R., Mine, S., Renshaw, A., Smy, M. B., Sobel, H. W., Takhistov, V., Weatherly, P., Ganezer, K. S., Hartfiel, B. L., Hill, J., Keig, W. E., Hong, N., Kim, J. Y., Lim, I. T., Park, R. G., Akiri, T., Albert, J. B., Himmel, A., Li, Z., O’Sullivan, E., Scholberg, K., Walter, C. W., Wongjirad, T., Ishizuka, T., Nakamura, T., Jang, J. S., Choi, K., Learned, J. G., Matsuno, S., Smith, S. N., Friend, M., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Nishikawa, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Nakano, Y., Suzuki, A. T., Takeuchi, Y., Yano, T., Cao, S. V., Hayashino, T., Hiraki, T., Hirota, S., Huang, K., Ieki, K., Jiang, M., Kikawa, T., Minamino, A., Murakami, A., Nakaya, T., Patel, N. D., Suzuki, K., Takahashi, S., Wendell, R. A., Fukuda, Y., Itow, Y., Mitsuka, G., Muto, F., Suzuki, T., Mijakowski, P., Frankiewicz, K., Hignight, J., Imber, J., Jung, C. K., Li, X., Palomino, J. L., Santucci, G., Taylor, I., Vilela, C., Wilking, M. J., Yanagisawa, C., Fukuda, D., Ishino, H., Kayano, T., Kibayashi, A., Koshio, Y., Mori, T., Sakuda, M., Takeuchi, J., Yamaguchi, R., Kuno, Y., Tacik, R., Kim, S. B., Okazawa, H., Choi, Y., Ito, K., Nishijima, K., Koshiba, M., Totsuka, Y., Suda, Y., Yokoyama, M., Bronner, C., Calland, R. G., Hartz, M., Martens, K., Obayashi, Y., Suzuki, Y., Vagins, M. R., Nantais, C. M., Martin, J. F., de Perio, P., Tanaka, H. A., Konaka, A., Chen, S., Sui, H., Wan, L., Yang, Z., Zhang, H., Zhang, Y., Connolly, K., Dziomba, M., and Wilkes, R. J. Tue . "Solar neutrino measurements in Super-Kamiokande-IV". United States. https://doi.org/10.1103/PhysRevD.94.052010. https://www.osti.gov/servlets/purl/1598644.
@article{osti_1598644,
title = {Solar neutrino measurements in Super-Kamiokande-IV},
author = {Abe, K. and Haga, Y. and Hayato, Y. and Ikeda, M. and Iyogi, K. and Kameda, J. and Kishimoto, Y. and Marti, Ll. and Miura, M. and Moriyama, S. and Nakahata, M. and Nakajima, T. and Nakayama, S. and Orii, A. and Sekiya, H. and Shiozawa, M. and Sonoda, Y. and Takeda, A. and Tanaka, H. and Takenaga, Y. and Tasaka, S. and Tomura, T. and Ueno, K. and Yokozawa, T. and Akutsu, R. and Irvine, T. and Kaji, H. and Kajita, T. and Kametani, I. and Kaneyuki, K. and Lee, K. P. and Nishimura, Y. and McLachlan, T. and Okumura, K. and Richard, E. and Labarga, L. and Fernandez, P. and Blaszczyk, F. d. M. and Gustafson, J. and Kachulis, C. and Kearns, E. and Raaf, J. L. and Stone, J. L. and Sulak, L. R. and Berkman, S. and Tobayama, S. and Goldhaber, M. and Bays, K. and Carminati, G. and Griskevich, N. J. and Kropp, W. R. and Mine, S. and Renshaw, A. and Smy, M. B. and Sobel, H. W. and Takhistov, V. and Weatherly, P. and Ganezer, K. S. and Hartfiel, B. L. and Hill, J. and Keig, W. E. and Hong, N. and Kim, J. Y. and Lim, I. T. and Park, R. G. and Akiri, T. and Albert, J. B. and Himmel, A. and Li, Z. and O’Sullivan, E. and Scholberg, K. and Walter, C. W. and Wongjirad, T. and Ishizuka, T. and Nakamura, T. and Jang, J. S. and Choi, K. and Learned, J. G. and Matsuno, S. and Smith, S. N. and Friend, M. and Hasegawa, T. and Ishida, T. and Ishii, T. and Kobayashi, T. and Nakadaira, T. and Nakamura, K. and Nishikawa, K. and Oyama, Y. and Sakashita, K. and Sekiguchi, T. and Tsukamoto, T. and Nakano, Y. and Suzuki, A. T. and Takeuchi, Y. and Yano, T. and Cao, S. V. and Hayashino, T. and Hiraki, T. and Hirota, S. and Huang, K. and Ieki, K. and Jiang, M. and Kikawa, T. and Minamino, A. and Murakami, A. and Nakaya, T. and Patel, N. D. and Suzuki, K. and Takahashi, S. and Wendell, R. A. and Fukuda, Y. and Itow, Y. and Mitsuka, G. and Muto, F. and Suzuki, T. and Mijakowski, P. and Frankiewicz, K. and Hignight, J. and Imber, J. and Jung, C. K. and Li, X. and Palomino, J. L. and Santucci, G. and Taylor, I. and Vilela, C. and Wilking, M. J. and Yanagisawa, C. and Fukuda, D. and Ishino, H. and Kayano, T. and Kibayashi, A. and Koshio, Y. and Mori, T. and Sakuda, M. and Takeuchi, J. and Yamaguchi, R. and Kuno, Y. and Tacik, R. and Kim, S. B. and Okazawa, H. and Choi, Y. and Ito, K. and Nishijima, K. and Koshiba, M. and Totsuka, Y. and Suda, Y. and Yokoyama, M. and Bronner, C. and Calland, R. G. and Hartz, M. and Martens, K. and Obayashi, Y. and Suzuki, Y. and Vagins, M. R. and Nantais, C. M. and Martin, J. F. and de Perio, P. and Tanaka, H. A. and Konaka, A. and Chen, S. and Sui, H. and Wan, L. and Yang, Z. and Zhang, H. and Zhang, Y. and Connolly, K. and Dziomba, M. and Wilkes, R. J.},
abstractNote = {We report that upgraded electronics, improved water system dynamics, better calibration and analysis techniques allowed Super-Kamiokande-IV to clearly observe very low-energy B8 solar neutrino interactions, with recoil electron kinetic energies as low as ~3.5 MeV. Super-Kamiokande-IV data-taking began in September of 2008; this paper includes data until February 2014, a total livetime of 1664 days. The measured solar neutrino flux is (2.308±0.020(stat)-0.040+0.039(syst))×106/(cm2 sec) assuming no oscillations. The observed recoil electron energy spectrum is consistent with no distortions due to neutrino oscillations. An extended maximum likelihood fit to the amplitude of the expected solar zenith angle variation of the neutrino-electron elastic scattering rate in SK-IV results in a day/night asymmetry of (-3.6±1.6(stat)±0.6(syst))%. The SK-IV solar neutrino data determine the solar mixing angle as sin2θ12=0.327-0.031+0.026, all SK solar data (SK-I, SK-II, SK III and SK-IV) measures this angle to be sin2θ12=0.334-0.023+0.027, the determined mass-squared splitting is Δm212=4.8-0.8+1.5×10-5 eV2.},
doi = {10.1103/PhysRevD.94.052010},
url = {https://www.osti.gov/biblio/1598644}, journal = {Physical Review D},
issn = {2470-0010},
number = 5,
volume = 94,
place = {United States},
year = {2016},
month = {9}
}

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