Solar 8B and hep neutrino measurements from 1258 days of Super-Kamiokande data.
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.
Fukuda
S
S
Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan.
Fukuda
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Y
Ishitsuka
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M
Itow
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Y
Kajita
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T
Kameda
J
J
Kaneyuki
K
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Kobayashi
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Koshio
Y
Y
Miura
M
M
Moriyama
S
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Nakahata
M
M
Nakayama
S
S
Okada
A
A
Sakurai
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N
Shiozawa
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M
Suzuki
Y
Y
Takeuchi
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H
Takeuchi
Y
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Toshito
T
T
Totsuka
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Yamada
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Desai
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Earl
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Kearns
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Messier
M D
MD
Scholberg
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Stone
J L
JL
Sulak
L R
LR
Walter
C W
CW
Goldhaber
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Barszczak
T
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Casper
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Gajewski
W
W
Kropp
W R
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Mine
S
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Liu
D W
DW
Price
L R
LR
Smy
M B
MB
Sobel
H W
HW
Vagins
M R
MR
Ganezer
K S
KS
Keig
W E
WE
Ellsworth
R W
RW
Tasaka
S
S
Kibayashi
A
A
Learned
J G
JG
Matsuno
S
S
Takemori
D
D
Hayato
Y
Y
Ishii
T
T
Kobayashi
T
T
Nakamura
K
K
Obayashi
Y
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Oyama
Y
Y
Sakai
A
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Sakuda
M
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Kohama
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Suzuki
A T
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Inagaki
T
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Nakaya
T
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Nishikawa
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Haines
T J
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Blaufuss
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Dazeley
S
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Lee
K B
KB
Svoboda
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Goodman
J A
JA
Guillian
G
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Sullivan
G W
GW
Turcan
D
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Habig
A
A
Hill
J
J
Jung
C K
CK
Martens
K
K
Malek
M
M
Mauger
C
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McGrew
C
C
Sharkey
E
E
Viren
B
B
Yanagisawa
C
C
Mitsuda
C
C
Miyano
K
K
Saji
C
C
Shibata
T
T
Kajiyama
Y
Y
Nagashima
Y
Y
Nitta
K
K
Takita
M
M
Yoshida
M
M
Kim
H I
HI
Kim
S B
SB
Yoo
J
J
Okazawa
H
H
Ishizuka
T
T
Etoh
M
M
Gando
Y
Y
Hasegawa
T
T
Inoue
K
K
Ishihara
K
K
Maruyama
T
T
Shirai
J
J
Suzuki
A
A
Koshiba
M
M
Hatakeyama
Y
Y
Ichikawa
Y
Y
Koike
M
M
Nishijima
K
K
Fujiyasu
H
H
Ishino
H
H
Morii
M
M
Watanabe
Y
Y
Golebiewska
U
U
Kielczewska
D
D
Boyd
S C
SC
Stachyra
A L
AL
Wilkes
R J
RJ
Young
K K
KK