Reanalysis of the GALLEX solar neutrino flux and source experiments
Reanalysis of the GALLEX solar neutrino flux and source experiments
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DOI：
10.1016/j.physletb.2010.01.030
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发表时间：
2010-01
影响因子：
4.4
通讯作者：
F. Kaether;W. Hampel;G. Heusser;J. Kiko;T. Kirsten
中科院分区：
文献类型：
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作者：
F. Kaether;W. Hampel;G. Heusser;J. Kiko;T. Kirsten
在实验室完成镓太阳中微子实验(Gallex：1991-1997年；GNO：1998-2003年)之后，我们借助新的技术数据对Gallex的结果进行了回顾更新，这些新的技术数据在低速测量阶段结束之前(即GNO太阳运行结束之前)由于主要原因而无法获得。随后的高速率实验允许校准绝对内部计数器效率和用于反背景辨别的先进脉冲形状分析。Gallex(仅限)的更新总体结果为73.4SNU7.3+7.1SNU。这比旧值77.5SNU(−7.8+7.5SNU)低5.3%(Gallex Collaboration，W.Hampel等人，1999年[1])，误差大大减少。对1994/1995年的51Cr中微子源实验的重新分析也得到了类似的约化。
After the completion of the gallium solar neutrino experiments at the Laboratori Nazionali del Gran Sasso (Gallex: 1991–1997; GNO: 1998–2003) we have retrospectively updated the Gallex results with the help of new technical data that were impossible to acquire for principle reasons before the completion of the low rate measurement phase (that is, before the end of the GNO solar runs). Subsequent high rate experiments have allowed the calibration of absolute internal counter efficiencies and of an advanced pulse shape analysis for counter background discrimination. The updated overall result for Gallex (only) is 73.4−7.3+7.1SNU. This is 5.3% below the old value of 77.5−7.8+7.5SNU (Gallex Collaboration, W. Hampel et al., 1999 [1]), with a substantially reduced error. A similar reduction is obtained from the reanalysis of the51Cr neutrino source experiments of 1994/1995.