Solar 8B and hep neutrino measurements from 1258 days of Super-Kamiokande data

S Fukuda; Y Fukuda; M Ishitsuka; Y Itow; T Kajita; J Kameda; K Kaneyuki; K Kobayashi; Y Koshio; M Miura; S Moriyama; M Nakahata; S Nakayama; A Okada; N Sakurai; M Shiozawa; Y Suzuki; H Takeuchi; Y Takeuchi; T Toshito; Y Totsuka; S Yamada; S Desai; M Earl; E Kearns; M D Messier; K Scholberg; J L Stone; L R Sulak; C W Walter; M Goldhaber; T Barszczak; D Casper; W Gajewski; W R Kropp; S Mine; D W Liu; L R Price; M B Smy; H W Sobel; M R Vagins; K S Ganezer; W E Keig; R W Ellsworth; S Tasaka; A Kibayashi; J G Learned; S Matsuno; D Takemori; Y Hayato; T Ishii; T Kobayashi; K Nakamura; Y Obayashi; Y Oyama; A Sakai; M Sakuda; M Kohama; A T Suzuki; T Inagaki; T Nakaya; K Nishikawa; T J Haines; E Blaufuss; S Dazeley; K B Lee; R Svoboda; J A Goodman; G Guillian; G W Sullivan; D Turcan; A Habig; J Hill; C K Jung; K Martens; M Malek; C Mauger; C McGrew; E Sharkey; B Viren; C Yanagisawa; C Mitsuda; K Miyano; C Saji; T Shibata; Y Kajiyama; Y Nagashima; K Nitta; M Takita; M Yoshida; H I Kim; S B Kim; J Yoo; H Okazawa; T Ishizuka; M Etoh; Y Gando; T Hasegawa; K Inoue; K Ishihara; T Maruyama; J Shirai; A Suzuki; M Koshiba; Y Hatakeyama; Y Ichikawa; M Koike; K Nishijima; H Fujiyasu; H Ishino; M Morii; Y Watanabe; U Golebiewska; D Kielczewska; S C Boyd; A L Stachyra; R J Wilkes; K K Young; Super-Kamiokande Collaboration

doi:10.1103/PhysRevLett.86.5651

Solar 8B and hep neutrino measurements from 1258 days of Super-Kamiokande data

Phys Rev Lett. 2001 Jun 18;86(25):5651-5. doi: 10.1103/PhysRevLett.86.5651.

Authors

S Fukuda¹, Y Fukuda, M Ishitsuka, Y Itow, T Kajita, J Kameda, K Kaneyuki, K Kobayashi, Y Koshio, M Miura, S Moriyama, M Nakahata, S Nakayama, A Okada, N Sakurai, M Shiozawa, Y Suzuki, H Takeuchi, Y Takeuchi, T Toshito, Y Totsuka, S Yamada, S Desai, M Earl, E Kearns, M D Messier, K Scholberg, J L Stone, L R Sulak, C W Walter, M Goldhaber, T Barszczak, D Casper, W Gajewski, W R Kropp, S Mine, D W Liu, L R Price, M B Smy, H W Sobel, M R Vagins, K S Ganezer, W E Keig, R W Ellsworth, S Tasaka, A Kibayashi, J G Learned, S Matsuno, D Takemori, Y Hayato, T Ishii, T Kobayashi, K Nakamura, Y Obayashi, Y Oyama, A Sakai, M Sakuda, M Kohama, A T Suzuki, T Inagaki, T Nakaya, K Nishikawa, T J Haines, E Blaufuss, S Dazeley, K B Lee, R Svoboda, J A Goodman, G Guillian, G W Sullivan, D Turcan, A Habig, J Hill, C K Jung, K Martens, M Malek, C Mauger, C McGrew, E Sharkey, B Viren, C Yanagisawa, C Mitsuda, K Miyano, C Saji, T Shibata, Y Kajiyama, Y Nagashima, K Nitta, M Takita, M Yoshida, H I Kim, S B Kim, J Yoo, H Okazawa, T Ishizuka, M Etoh, Y Gando, T Hasegawa, K Inoue, K Ishihara, T Maruyama, J Shirai, A Suzuki, M Koshiba, Y Hatakeyama, Y Ichikawa, M Koike, K Nishijima, H Fujiyasu, H Ishino, M Morii, Y Watanabe, U Golebiewska, D Kielczewska, S C Boyd, A L Stachyra, R J Wilkes, K K Young; Super-Kamiokande Collaboration

Affiliation

¹ Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan.

PMID: 11415325
DOI: 10.1103/PhysRevLett.86.5651

Abstract

Solar neutrino measurements from 1258 days of data from the Super-Kamiokande detector are presented. The measurements are based on recoil electrons in the energy range 5.0-20.0 MeV. The measured solar neutrino flux is 2.32+/-0.03(stat)+0.08-0.07(syst)x10(6) cm(-2) x s(-1), which is 45.1+/-0.5(stat)+1.6-1.4(syst)% of that predicted by the BP2000 SSM. The day vs night flux asymmetry (Phi(n)-Phi(d))/Phi(average) is 0.033+/-0.022(stat)+0.013-0.012(syst). The recoil electron energy spectrum is consistent with no spectral distortion. For the hep neutrino flux, we set a 90% C.L. upper limit of 40x10(3) cm(-2) x s(-1), which is 4.3 times the BP2000 SSM prediction.