Solar 8B and hep neutrino measurements from 1258 days of Super-Kamiokande data
Solar 8B and hep neutrino measurements from 1258 days of Super-Kamiokande data
复制标题
DOI：
10.1103/physrevlett.86.5651
复制
发表时间：
2001-06-18
影响因子：
8.6
通讯作者：
Young, KK
中科院分区：
文献类型：
--
作者：
Fukuda, S;Fukuda, Y;Young, KK
太阳中微子测量从1258天的数据从超级神冈探测器提出。测量是基于5.0-20.0 MeV能量范围内的反冲电子。测量到的太阳中微子通量为2.32 +/- 0.03(stat)(+0.08)(-0.07) (syst) x 10(6) cm(-2) s(-1)，是BP2000 SSM预测的45.1 +/- 0.5 (stat)(+1.6)(-1.4)(syst)%。昼夜通量不对称性(Phi (n) - Phi (d)) / Phi（平均）为0.033 +/- 0.022(stat)(+0.013)(-0.012)（syst）。反冲电子能谱基本一致，无谱畸变。对于hep中微子通量，我们设定了90% C.L.上限为40 × 10(3) cm(-2) s(-1)，是BP2000 SSM预测的4.3倍。
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) x 10(6) cm(-2) s(-1) which is 45.1 +/- 0.5 (stat)(+1.6)(-1.4)(syst)% of that predicted by the BP2000 SSM. The day vs nieht 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 40 x 10(3) cm(-2) s(-1) which is 4.3 times the BP2000 SSM prediction.