重新审视“LSND异常”II：对数据分析的批评
Revisiting the 'LSND anomaly' II: critique of the data analysis
摘要：
本文，连同以前的文件，问题所谓的“LSND异常”：一个3.8西格玛过量的反电子中微子相互作用超过标准背景下，观察到的LSND合作在束流收集实验与800兆电子伏的质子。这种过剩被解释为反中微子到反电子中微子振荡的证据，在\Deltam 2范围从0.2 eV 2到2 eV 2。这样的\Deltam 2范围与广泛接受的三个轻中微子种类之间的振荡模型不相容，并且需要至少一个轻“无菌”中微子的存在。在前面的论文中，得出的结论是，标准背景的估计值必须显着增加。在本文中，LSND合作的估计数的反电子中微子相互作用，其次是中子捕获，其错误，提出了质疑。总体结论是，“LSND异常”的显著性不大于2.3 sigma。
英文摘要：
This paper, together with a preceding paper, questions the so-called 'LSND anomaly': a 3.8 sigma excess of antielectronneutrino interactions over standard backgrounds, observed by the LSND Collaboration in a beam dump experiment with 800 MeV protons. That excess has been interpreted as evidence for the antimuonneutrino to antielectronneutrino oscillation in the \Deltam2 range from 0.2 eV2 to 2 eV2. Such a \Deltam2 range is incompatible with the widely accepted model of oscillations between three light neutrino species and would require the existence of at least one light 'sterile' neutrino. In a preceding paper, it was concluded that the estimates of standard backgrounds must be significantly increased. In this paper, the LSND Collaboration's estimate of the number of antielectronneutrino interactions followed by neutron capture, and of its error, is questioned. The overall conclusion is that the significance of the 'LSND anomaly' is not larger than 2.3 sigma.
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