If sterile neutrinos exist, how can one determine the total solar neutrino fluxes?
If sterile neutrinos exist, how can one determine the total solar neutrino fluxes?
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如果存在惰性中微子，如何确定太阳中微子总通量？
DOI：
10.1103/physrevc.66.035802
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发表时间：
2002
影响因子：
3.1
通讯作者：
C. Peña
中科院分区：
文献类型：
--
作者：
J. Bahcall;M. C. González;M. C. González;M. C. González;C. Peña
如果仅存在活性中微子，则通过对太阳中微子实验的全局分析推断出的 8 B 太阳中微子通量与标准太阳模型预测值的误差在 11%（1 秒）以内，但如果存在惰性中微子，则可能高达标准预测值的 1.7 倍。我们展示了总共 8 个 B 中微子通量 ~ 活性中微子加上惰性中微子！如果 LMA 中微子振荡解正确并且 KamLAND 的模拟性能有效，则通过结合 KamLAND 反应堆实验和 SNO CC 太阳中微子实验进行的带电电流测量，可以通过实验确定约 10% (1s)。还包括 SNO NC 数据，通过该方法可以测量 8 B 中微子通量的惰性部分，其精度约为标准太阳模型通量的 12% (1s)。结合 Super-Kamiokande 和 KamLAND 测量，并假设振荡仅发生在活跃中微子中，8 B 中微子通量可测量到 6% (1s)；总通量测量精度可达9%左右。通过结合 KamLAND、SNO 和镓中微子实验的测量结果，可以确定总 7 Be 太阳中微子通量，精度约为 28% (1 s)。通过比较 KamLAND 实验和 BOREXINO 太阳中微子实验的数据（假设两个探测器都按预期工作），可以确定 7 Be 中微子总量，其 1 秒精度约为 11% 或更好。使用来自镓、KamLAND、BOREXINO 和 SNO 实验的数据可以确定 pp 中微子通量约为 15%。
The 8 B solar neutrino flux inferred from a global analysis of solar neutrino experiments is within 11% (1 s) of the predicted standard solar model value if only active neutrinos exist, but could be as large as 1.7 times the standard prediction if sterile neutrinos exist. We show that the total 8 B neutrino flux ~active plus sterile neutrinos! can be determined experimentally to about 10% (1s) by combining charged current measurements made with the KamLAND reactor experiment and with the SNO CC solar neutrino experiment, provided the LMA neutrino oscillation solution is correct and the simulated performance of KamLAND is valid. Including also SNO NC data, the sterile component of the 8 B neutrino flux can be measured by this method to an accuracy of about 12% (1s) of the standard solar model flux. Combining Super-Kamiokande and KamLAND measurements and assuming the oscillations occur only among active neutrinos, the 8 B neutrino flux can be measured to 6% (1s); the total flux can be measured to an accuracy of about 9%. The total 7 Be solar neutrino flux can be determined to an accuracy of about 28% (1 s) by combining measurements made with the KamLAND, SNO, and gallium neutrino experiments. One can determine the total 7 Be neutrino flux to a 1 s accuracy of about 11% or better by comparing data from the KamLAND experiment and the BOREXINO solar neutrino experiment provided both detectors work as expected. The pp neutrino flux can be determined to about 15% using data from the gallium, KamLAND, BOREXINO, and SNO experiments.