Solar Neutrino Oscillation Parameters after SNO Phase-Ⅲ and SAGE Part-Ⅲ |
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作者姓名: | 杨平 刘秋宇 |
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作者单位: | Department of Modern Physics, University of Science and Technology of China, Hefei 230026 |
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基金项目: | Supported by the National Natural Science Foundation of China under Grant No 90203002. |
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摘 要: | We analyse the recently published results from solar neutrino experiments SNO Phase-Ⅲ and SAGE Part-Ⅲ and show their constraints on solar neutrino oscillation parameters, especially for the mixing angle θ12. Through a global analysis using all existing data from SK, SNO, Ga&Cl radiochemieal experiments and long base fine reactor experiment KamLAND, we obtain the parameters △m12^2= 7.684 -0.208^+0.212×10^-5 eV^2, tan^2 θ12=0.440-0.057^+0.059. also find that the discrepancy between the KamLAND and solar neutrino results can be reduced by choosing a small non-zero value for the mixing angle θ13.
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关 键 词: | 太阳中微子 SAGE SNO 振荡参数 中微子实验 中微子振荡 混合角 镓 |
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