论文标题
Na64实验中轴突样颗粒的光生源
Photoproduction of axion-like particles in the NA64 experiment
论文作者
论文摘要
可以在高能量光子散射$γn\ to n a $ off nuclei中观察到类似轴颗粒$ a $ a $ a $ a $ a $ a $ a $ a $ a $ a $ a（SM）量规场。在本文中，我们描述了ALP生产横截面的计算和该产量的特性。横截面公式是在计划中实现的，以模拟Na64实验，即CERN SPS处的活动电子束转储设施。我们研究了Na64实验的前景，以搜索$ 10 \，\ mbox {Mev} \ Lesssim m_a \ Lessim 100 $ MEV质量范围，用于统计数据，该统计量对应于$ 5 \ times 10^{12} {12} $ elector target（eot）。
Axion-like particles $a$ (ALPs) that couple to the Standard Model (SM) gauge fields could be observed in the high-energy photon scattering $γN\to N a$ off nuclei followed by the $a\to γγ$ decay. In the present paper we describe the calculation of the ALP production cross-section and the properties of this production. The cross section formulas are implemented in the program for the simulation of events in the NA64 experiment, the active electron beam dump facility at the CERN SPS. We study the prospects of the NA64 experiment to search for ALP in the $10\, \mbox{MeV} \lesssim m_a\lesssim 100$ MeV mass range for the statistics corresponding to up to $5\times 10^{12}$ electrons on target (EOT).
