太阳中微子问题

Solar Neutrino Problem

标准太阳模型预言7Be太阳中微子流强为 (3 4 4± 3 4)SNU ,且不依赖核反应7Be(p ,r) 8B截面测量的不确定性 .假如太阳中微子在它们产生后没有发生任何变化 ,且正在运行的太阳中微子测量实验是正确的 ,那么在SuperKamiokande实验上8B太阳中微子流强约为标准太阳模型预言值的 47 3 % ,CNO中微子流强也是标准太阳模型的一半 .对于7Be太阳中微子 ,当其不一致性不超过 1倍或 3倍标准偏差时 ,在镓探测器上7Be太阳中微子只有标准太阳模型预言值的 19 6%或 5 2 6% .

The solar neutrino problem is introduced in detail in this paper.Standard solar model predict 7Be solar neutrino fluxes to be (34.4±3.4)SNU,and it is independent of uncertainties in the measured to cross-section of the 7Be(p,r) 8Bunclear reaction.If nothing happens to solar neutrino after they create and Homestake,SAGE,GALLEX,Super Kamiokande and SNO solar neutrino experiments are correct,then the 8B and SNO solar neutrino fluxes must be about 47.3% and 50% of the predicted value by standard solar model in Super Kamiokande.For 7Be solar neutrino,if the disagreement doesn't exceed 1σ or 3σstandard deviations,the 7Be solar neutrino fluxes must be 19.6% or 52.6% of the standard predicted value in the gallium experiment.