$e^+e^-\toηγ$反应截面的再分析
Reanalysis of the $e^+e^-\toηγ$ reaction cross section
摘要:
在VEPP-2 M $e^+e^-$对撞机上用SND探测器测量能量范围为$0.6<\sqrt{s}<1.38 \mathrm{GeV}$的$e^+e^-\to ηγ$截面的实验中,对数据进行了再分析。我们的目标是提高以前的结果的准确性,通过分析模糊的近似能量依赖的$e^+e^-\to ηγ$截面,这是没有考虑到在我们以前的研究。我们报告了新的结果近似的$e^+e^-\to ηγ$截面的基础上矢量优势模型下的新的模型参数假设。
英文摘要:
In the experiment with the SND detector at the VEPP-2M $e^+e^-$ collider measuring the $e^+e^-\to ηγ$ cross section in the energy range $0.6<\sqrt{s}<1.38 \mathrm{GeV}$ the reanalysis of data is performed. The goal is to improve the accuracy of the previous results by analysing ambiguities in the approximation of energy dependence of the $e^+e^-\to ηγ$ cross section, which were not taken into account in our previous study. We report new results on the approximation of the $e^+e^-\to ηγ$ cross section based on Vector Dominance Model under new model parameter assumptions.
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