Measurement of the Solar Neutrino Energy Spectrum Using Neutrino-Electron Scattering
Y. Fukuda(The University of Tokyo), T. Hayakawa(The University of Tokyo), E. Ichihara(The University of Tokyo), K. Inoue(The University of Tokyo), K. Ishihara(The University of Tokyo), H. Ishino(The University of Tokyo), Y. Itow(The University of Tokyo), T. Kajita(The University of Tokyo), J. Kameda(The University of Tokyo), S. Kasuga(The University of Tokyo), Kazuyoshi Kobayashi(The University of Tokyo), Yoshiyuki Kobayashi(The University of Tokyo), Y. Koshio(The University of Tokyo), M. Miura(The University of Tokyo), M. Nakahata(The University of Tokyo), S. Nakayama(The University of Tokyo), Atsushi Okada(The University of Tokyo), K. Okumura(The University of Tokyo), N. Sakurai(The University of Tokyo), M. Shiozawa(The University of Tokyo), Y. Suzuki(The University of Tokyo), Y. Takeuchi(The University of Tokyo), Y. Totsuka(The University of Tokyo), S. Yamada(The University of Tokyo), M. Earl(Boston University), A. Habig(Boston University), E. Kearns(Boston University), M. D. Messier(Boston University), K. Scholberg(Boston University), J. L. Stone(Boston University), L. Sulak(Boston University), C. W. Walter(Boston University), M. Goldhaber(Brookhaven National Laboratory), T. Barszczak(University of California, Irvine), D. Casper(University of California, Irvine), W. Gajewski(University of California, Irvine), P. G. Halverson(University of California, Irvine), Jonathan Y. Hsu(University of California, Irvine), W. R. Kropp(University of California, Irvine), L. R. Price(University of California, Irvine), F. Reines(University of California, Irvine), M. Smy(University of California, Irvine), H. W. Sobel(University of California, Irvine), M. R. Vagins(University of California, Irvine), K. S. Ganezer(California State University, Dominguez Hills), W. E. Keig(California State University, Dominguez Hills), R. W. Ellsworth(George Mason University), S. Tasaka(Gifu University), J. Flanagan(University of Hawaii System), A. Kibayashi(University of Hawaii System), J. G. Learned(University of Hawaii System), S. Matsuno(University of Hawaii System), V. J. Stenger(University of Hawaii System), D. Takemori(University of Hawaii System), T. Ishii(High Energy Accelerator Research Organization), J. Kanzaki(High Energy Accelerator Research Organization), T. Kobayashi(High Energy Accelerator Research Organization), S. Mine(High Energy Accelerator Research Organization), K. Nakamura(High Energy Accelerator Research Organization), K. Nishikawa(High Energy Accelerator Research Organization), Y. Oyama(High Energy Accelerator Research Organization), Akito Sakai(High Energy Accelerator Research Organization), M. Sakuda(High Energy Accelerator Research Organization), O. Sasaki(High Energy Accelerator Research Organization), S. Echigo(Kobe University), M. Kohama(Kobe University), Y. Suzuki(Tohoku University), T. J. Haines(Los Alamos National Laboratory), E. Blaufuss(Louisiana State University), B. K. Kim(Louisiana State University), R. Sanford(Louisiana State University), R. Svoboda(Louisiana State University), M. L. Chen(University of Maryland, College Park), Z. Conner(University of Maryland, College Park), J. A. Goodman(University of Maryland, College Park), G. W. Sullivan(University of Maryland, College Park), J. Hill(State University of New York), C. K. Jung(State University of New York), K. Martens(State University of New York), C. Mauger(State University of New York), C. McGrew(State University of New York), E. Sharkey(State University of New York), B. Viren(State University of New York), C. Yanagisawa(State University of New York), W. Doki(Niigata University), K. Miyano(Niigata University), H. Okazawa(Niigata University), C. Saji(Niigata University), M. Takahata(Niigata University), Y. Nagashima(The University of Osaka), M. Takita(The University of Osaka), Tomohiro Yamaguchi(The University of Osaka), M. Yoshida(The University of Osaka), S. B. Kim(Seoul National University), Masato Eto(Tohoku University), K. Fujita(Tohoku University), T. Hasegawa(Tohoku University), T. Hasegawa(Tohoku University), S. Hatakeyama(Tohoku University), T. Iwamoto(Tohoku University), M. Koga(Tohoku University), T. Maruyama(Tohoku University), Hiroshi Ogawa(Tohoku University), J. Shirai(Tohoku University), Y. Suzuki(Tohoku University), F. Tsushima(Tohoku University), M. Koshiba(The University of Tokyo), M. Nemoto(Tokai University), K. Nishijima(Tokai University), T. Futagami(Tokyo Institute of Technology), Y. Hayato(Tokyo Institute of Technology), Y. Kanaya(Tokyo Institute of Technology), K. Kaneyuki(Tokyo Institute of Technology), Y. Watanabe(Tokyo Institute of Technology), D. Kiełczewska(University of California, Irvine), R. A. Doyle(University of Washington), Jimin George(University of Washington), A. L. Stachyra(University of Washington), L. Wai(University of Washington), R. J. Wilkes(University of Washington), K. K. Young(University of Washington)
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Abstract
A measurement of the energy spectrum of recoil electrons from solar neutrino scattering in the Super-Kamiokande detector is presented. The results shown here were obtained from 504 days of data taken between 31 May 1996 and 25 March 1998. The shape of the measured spectrum is compared with the expectation for solar ${}^{8}\mathrm{B}$ neutrinos. The comparison takes into account both kinematic and detector related effects in the measurement process. The spectral shape comparison between the observation and the expectation gives a ${\ensuremath{\chi}}^{2}$ of 25.3 with 15 degrees of freedom, corresponding to a $4.6%$ confidence level.
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