APS » Phys. Rev. D » Volume 78 » Issue 3

J. P. Cravens,⁶ K. Abe,¹ T. Iida,¹ K. Ishihara,¹ J. Kameda,¹ Y. Koshio,¹ A. Minamino,¹ C. Mitsuda,¹ M. Miura,¹ S. Moriyama,¹ M. Nakahata,^1,3 S. Nakayama,¹ Y. Obayashi,¹ H. Ogawa,¹ H. Sekiya,¹ M. Shiozawa,¹ Y. Suzuki,^1,3 A. Takeda,¹ Y. Takeuchi,¹ K. Ueshima,¹ H. Watanabe,¹ S. Yamada,¹ I. Higuchi,² C. Ishihara,² M. Ishitsuka,² T. Kajita,^2,3 K. Kaneyuki,² G. Mitsuka,² H. Nishino,² K. Okumura,² C. Saji,² Y. Takenaga,² S. Clark,⁴ S. Desai,⁴ F. Dufour,⁴ E. Kearns,⁴ S. Likhoded,⁴ M. Litos,⁴ J. L. Raaf,⁴ J. L. Stone,⁴ L. R. Sulak,⁴ W. Wang,⁴ M. Goldhaber,⁵ D. Casper,⁶ J. Dunmore,⁶ W. R. Kropp,⁶ D. W. Liu,⁶ S. Mine,⁶ C. Regis,⁶ M. B. Smy,⁶ H. W. Sobel,^3,6 M. R. Vagins,⁶ K. S. Ganezer,⁷ J. Hill,⁷ W. E. Keig,⁷ J. S. Jang,⁸ J. Y. Kim,⁸ I. T. Lim,⁸ M. Fechner,⁹ K. Scholberg,⁹ N. Tanimoto,⁹ C. W. Walter,⁹ R. Wendell,⁹ R. W. Ellsworth,¹⁰ S. Tasaka,¹¹ G. Guillian,¹² J. G. Learned,¹² S. Matsuno,¹² M. D. Messier,¹³ Y. Watanabe,¹⁴ Y. Hayato,^1,15 A. K. Ichikawa,¹⁵ T. Ishida,¹⁵ T. Ishii,¹⁵ T. Iwashita,¹⁵ T. Kobayashi,¹⁵ T. Nakadaira,¹⁵ K. Nakamura,¹⁵ K. Nitta,¹⁵ Y. Oyama,¹⁵ Y. Totsuka,¹⁵ A. T. Suzuki,¹⁶ M. Hasegawa,¹⁷ K. Hiraide,¹⁷ I. Kato,¹⁷ H. Maesaka,¹⁷ T. Nakaya,¹⁷ K. Nishikawa,¹⁷ T. Sasaki,¹⁷ H. Sato,¹⁷ S. Yamamoto,¹⁷ M. Yokoyama,¹⁷ T. J. Haines,^6,18 S. Dazeley,¹⁹ S. Hatakeyama,¹⁹ R. Svoboda,¹⁹ G. W. Sullivan,²⁰ D. Turcan,²⁰ A. Habig,²¹ Y. Fukuda,²² T. Sato,²² Y. Itow,²³ T. Koike,²³ T. Tanaka,²³ C. K. Jung,²⁴ T. Kato,²⁴ K. Kobayashi,²⁴ M. Malek,²⁴ C. McGrew,²⁴ A. Sarrat,²⁴ R. Terri,²⁴ C. Yanagisawa,²⁴ N. Tamura,²⁵ Y. Idehara,²⁶ M. Ikeda,²⁶ M. Sakuda,²⁶ M. Sugihara,²⁶ Y. Kuno,²⁷ M. Yoshida,²⁷ S. B. Kim,²⁸ B. S. Yang,²⁸ J. Yoo,²⁸ T. Ishizuka,²⁹ H. Okazawa,³⁰ Y. Choi,³¹ H. K. Seo,³¹ Y. Gando,³² T. Hasegawa,³² K. Inoue,³² Y. Furuse,³³ H. Ishii,³³ K. Nishijima,³³ H. Ishino,³⁴ M. Koshiba,³⁵ S. Chen,³⁶ Z. Deng,³⁶ Y. Liu,³⁶ D. Kielczewska,^6,37 H. Berns,³⁸ R. Gran,^20,38 K. K. Shiraishi,³⁸ A. Stachyra,³⁸ E. Thrane,³⁸ K. Washburn,³⁸ and R. J. Wilkes³⁸

(Super-Kamiokande Collaboration)

¹Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu, 506-1205, Japan
²Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
³Institute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
⁴Department of Physics, Boston University, Boston, Massachusetts 02215, USA
⁵Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA
⁶Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697-4575, USA
⁷Department of Physics, California State University, Dominguez Hills, Carson, California 90747, USA
⁸Department of Physics, Chonnam National University, Kwangju 500-757, Korea
⁹Department of Physics, Duke University, Durham, North Carolina 27708, USA
¹⁰Department of Physics, George Mason University, Fairfax, Virginia 22030, USA
¹¹Department of Physics, Gifu University, Gifu, Gifu 501-1193, Japan
¹²Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
¹³Department of Physics, Indiana University, Bloomington, Indiana 47405-7105, USA
¹⁴Physics Division, Department of Engineering, Kanagawa University, Kana gawa, Yokohama 221-8686, Japan
¹⁵High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
¹⁶Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
¹⁷Department of Physics, Kyoto University, Kyoto 606-8502, Japan
¹⁸Physics Division, P-23, Los Alamos National Laboratory, Los Alamos, New Mexico 87544, USA
¹⁹Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA
²⁰Department of Physics, University of Maryland, College Park, Maryland 20742, USA
²¹Department of Physics, University of Minnesota, Duluth, Minnesota 55812-2496, USA
²²Department of Physics, Miyagi University of Education, Sendai, Miyagi 980-0845, Japan
²³Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aic hi 464-8602, Japan
²⁴Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800, USA
²⁵Department of Physics, Niigata University, Niigata, Niigata 950-2181, Japan
²⁶Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
²⁷Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
²⁸Department of Physics, Seoul National University, Seoul 151-742, Korea
²⁹Department of Systems Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
³⁰Department of Informatics in Social Welfare, Shizuoka University of Welfare, Yaizu, Shizuoka, 425-8611, Japan
³¹Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea
³²Research Center for Neutrino Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
³³Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
³⁴Department of Physics, Tokyo Institute for Technology, Meguro, Tokyo 152-8551, Japan
³⁵The University of Tokyo, Tokyo 113-0033, Japan
³⁶Department of Engineering Physics, Tsinghua University, Beijing, 10008 4, China
³⁷Institute of Experimental Physics, Warsaw University, 00-681 Warsaw, Poland
³⁸Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA

The results of the second phase of the Super-Kamiokande solar neutrino measurement are presented and compared to the first phase. The solar neutrino flux spectrum and time variation as well as oscillation results are statistically consistent with the first phase and do not show spectral distortion. The time-dependent flux measurement of the combined first and second phases coincides with the full period of solar cycle 23 and shows no correlation with solar activity. The measured ⁸B total flux is (2.38±0.05(stat.)_-0.15^+0.16(sys.))×10⁶ cm^-2 s^-1 and the day-night difference is found to be (-6.3±4.2(stat.)±3.7(sys.))%. There is no evidence of systematic tendencies between the first and second phases.

©2008 The American Physical Society

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