从包含轻子散射中提取中子观测量的曲折途径
Tortuous ways to the extraction of neutron observables from inclusive lepton scattering
摘要：
我们分析了新的JLAB数据包容电子散射各种目标。在$0.3\lesssim x\lesssim 0.95$范围内计算和测量的总包含横截面在对数尺度上显示出所有靶标的合理一致性。然而，更仔细地检查准弹性组件暴露出严重的差异。可能包含较少系统误差的EMC比率是相同的。对新数据的上述观测不能提取中子的磁形状因子（FF）$G_M^n$和结构函数（SF）$F_2^n$，尽管对旧数据进行完全相同的分析是成功的。我们将$F_2^D$上的旧CLAS协作添加到上述分析中。去掉一些散射点，似乎可以得到上述中子信息。我们将我们的结果与其他来源的结果进行比较。特别注意的是A=3的iso-doublet。目前的数据只存在于$^3$ He中，但可用的输入和电荷对称性也使$^3$ H的计算成为可能。它们的平均值是计算的等标量部分，并与经验修改的$^3$他对一个虚构的A=3等单线态进行比较。
英文摘要：
We analyze new JLAB data for inclusive electron scattering on various targets. Computed and measured total inclusive cross sections in the range $0.3\lesssim x\lesssim 0.95$ show on a logarithmic scale reasonable agreement for all targets. However, closer inspection of the Quasi-Elastic components bares serious discrepancies. EMC ratios which may contain less systematic errors fare the same. The above observations for the new data do not enable the extraction of the magnetic form factor (FF) $G_M^n$ and the Structure Function (SFs) $F_2^n$ of the neutron, although the application of exactly the same analysis to older data had been successful. We add to the above analysis older CLAS collaboration on $F_2^D$. Removing some scattered points, it appears possible to obtain the above mentioned neutron information. We compare our results with others from alternative sources. Particular attention is paid to the A=3 iso-doublet. Present data exist only for $^3$He, but the available input and charge symmetry also enable computations for $^3$H. Their average is the computed iso-scalar part and is compared with the empirical modification of $^3$He towards a fictitious A=3 iso-singlet.
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