论文标题
NCTEQ15HIX-将NPDF分析扩展到高$ x $，低$ q^2 $ region
nCTEQ15HIX -- Extending nPDF Analyses into the High-$x$, Low $Q^2$ Region
论文作者
论文摘要
我们使用NCTEQ分析框架来研究大X和中间至低$ Q $区域中的核部分分布功能（NPDF），并特别注意最近的JLAB深度无弹性散射数据。该数据在于一个区域通常被$ W $和$ Q $削减的全球NPDF分析所排除。当我们放松这些切割时，我们进入了一个新的运动区域，这需要新的现象学。特别是，我们研究了i）目标质量校正的影响，ii）更高的扭转校正，iii）deuteron校正和iv）核PDF参数化的形状，大致是$ x $接近一个。使用上述工具，我们生产了一个新的NPDF集（名为NCTEQ15HIX），该集合在这个具有挑战性的运动学区域中对新的JLAB数据进行了很好的描述，并显示了大于$ x $的不确定性，尤其是在上下的Quark味道。
We use the nCTEQ analysis framework to investigate nuclear Parton Distribution Functions (nPDFs) in the region of large x and intermediate-to-low $Q$, with special attention to recent JLab Deep Inelastic Scattering data on nuclear targets. This data lies in a region which is often excluded by $W$ and $Q$ cuts in global nPDF analyses. As we relax these cuts, we enter a new kinematic region, which requires new phenomenology. In particular, we study the impact of i) target mass corrections, ii) higher twist corrections, iii) deuteron corrections, and iv) the shape of the nuclear PDF parametrization at large-$x$ close to one. Using the above tools, we produce a new nPDF set (named nCTEQ15HIX) which yields a good description of the new JLab data in this challenging kinematic region, and displays reduced uncertainties at large $x$, in particular for up and down quark flavors.
