Multiple solutions in extracting physics information from experimental data
Multiple solutions in extracting physics information from experimental data
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DOI：
10.1142/s0217751x10051153
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发表时间：
2010-12
影响因子：
1.6
通讯作者：
Changzheng Yuan;X. Mo;P. Wang
中科院分区：
文献类型：
--
作者：
Changzheng Yuan;X. Mo;P. Wang
在许多实验情况下存在多种解决方案，其中几个干扰振幅求和以拟合实验测量的分布，如横截面，质谱和/或角分布。我们展示了几个例子，其中找到了多个解决方案，但在出版物中只报告了一个解决方案。由于在这些解中选择一个作为物理解没有标准规则，我们提出了一个与以前文献中采用的规则一致的简单规则：与振幅的最小幅度相对应的解必须是物理解。我们建议在以后的分析中测试这一规则。
Multiple solutions exist in many experimental situations where several interfering amplitudes are summed to fit experimentally measured distributions, such as cross sections, mass spectra, and/or angular distributions. We show a few examples where multiple solutions are found, but only one solution is reported in publications. Since there is no standard rule for choosing one among the solutions as the physics one, we propose a simple rule that agrees with what has been adopted in previous literature: the solution corresponding to the minimal magnitudes of the amplitudes must be the physical solution. We suggest testing this rule in future analyses.