Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
Phys Rev Lett. 2012 Jun 22;108(25):252001. doi: 10.1103/PhysRevLett.108.252001. Epub 2012 Jun 19.
We present a detailed analysis of the uncertainty in the neutron F(2n) structure function extracted from inclusive deuteron and proton deep-inelastic scattering data. The analysis includes experimental uncertainties as well as uncertainties associated with the deuteron wave function, nuclear smearing, and nucleon off-shell corrections. Correctly accounting for the Q(2) dependence of the data and calculations and restricting the nuclear corrections to microscopic models of the deuteron, we find a significantly smaller uncertainty in the extracted F(2n)/F(2p) ratio than in previous analyses. In addition to yielding an improved extraction of the neutron structure function, this analysis also provides an important baseline that can be compared to future, model-independent extractions of neutron structure to examine nuclear medium effects in the deuteron.
我们对从中子和质子深度非弹性散射数据中提取的中子 F(2n) 结构函数的不确定性进行了详细分析。分析包括实验不确定性以及与氘核波函数、核弥散和核子离壳修正相关的不确定性。通过正确考虑数据和计算的 Q(2)依赖性，并将核修正限制在氘核的微观模型中，我们发现与以前的分析相比，提取的 F(2n)/F(2p) 比的不确定性显著减小。除了改进中子结构函数的提取外，该分析还提供了一个重要的基线，可以与未来的、无模型的中子结构提取进行比较，以研究氘核中的核介质效应。
