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Department of Physics and Astronomy, Laurentian University, Sudbury, ON P3E 2C6, Canada.
Phys Rev Lett. 2008 Sep 12;101(11):111301. doi: 10.1103/PhysRevLett.101.111301. Epub 2008 Sep 9.
The Sudbury Neutrino Observatory (SNO) used an array of 3He proportional counters to measure the rate of neutral-current interactions in heavy water and precisely determined the total active (nu_x) 8B solar neutrino flux. This technique is independent of previous methods employed by SNO. The total flux is found to be 5.54_-0.31;+0.33(stat)-0.34+0.36(syst)x10(6) cm(-2) s(-1), in agreement with previous measurements and standard solar models. A global analysis of solar and reactor neutrino results yields Deltam2=7.59_-0.21;+0.19x10(-5) eV2 and theta=34.4_-1.2;+1.3 degrees. The uncertainty on the mixing angle has been reduced from SNO's previous results.
萨德伯里中微子观测站（SNO）使用了一组3He正比计数器来测量重水中中性流相互作用的速率，并精确测定了总的有源（νx）8B太阳中微子通量。该技术独立于SNO之前采用的方法。发现总通量为5.54_-0.31;+0.33（统计）-0.34+0.36（系统）×10（6）厘米（-2）秒（-1），与之前的测量结果和标准太阳模型一致。对太阳和反应堆中微子结果的全局分析得出Δm2=7.59_-0.21;+0.19×10（-5）电子伏特2，θ=34.4_-1.2;+1.3度。混合角的不确定性已比SNO之前的结果有所降低。
