论文标题
$^{10} $ b和$^{11} $ b中EMC效应的首次测量
First Measurement of the EMC Effect in $^{10}$B and $^{11}$B
论文作者
论文摘要
首次在$^{10} $ b和$^{11} $ b中首次测量了包含无弹性电子散射横截面(EMC效应)的核依赖性。以前对$ a \ leq 12 $核中EMC效应的测量显示出意外的核依赖性。 $^{10} $ b和$^{11} $ b被测量以更详细地探索该区域的EMC效应。结果以$^9 $,$^{10} $ b,$^{11} $ b和$^{12} $ c为10.6〜GEV的$^{12} $ C。发现硼同位素中的EMC效应与$^9 $ be和$^{12} $ c相似,在EMC效应范围内几乎没有核依赖性$ a = 4-12 $。这代表了重要的,新的数据支持以下假设:EMC效应主要取决于这些核的簇结构引起的局部核环境。
The nuclear dependence of the inclusive inelastic electron scattering cross section (the EMC effect) has been measured for the first time in $^{10}$B and $^{11}$B. Previous measurements of the EMC effect in $A \leq 12$ nuclei showed an unexpected nuclear dependence; $^{10}$B and $^{11}$B were measured to explore the EMC effect in this region in more detail. Results are presented for $^9$Be, $^{10}$B, $^{11}$B, and $^{12}$C at an incident beam energy of 10.6~GeV. The EMC effect in the boron isotopes was found to be similar to that for $^9$Be and $^{12}$C, yielding almost no nuclear dependence in the EMC effect in the range $A=4-12$. This represents important, new data supporting the hypothesis that the EMC effect depends primarily on the local nuclear environment due to the cluster structure of these nuclei.