论文标题
全球QCD分析中质子中的偏振反剂
Polarized Antimatter in the Proton from Global QCD Analysis
论文作者
论文摘要
我们介绍了旋转依赖性的Parton分布功能的第一个同时全局QCD分析，以及它们的自旋平均对应物和乳头，KAON和未识别的强子片段化函数。 This analysis includes all data relevant for constraining the polarized light quark sea asymmetry $Δ\bar{u} - Δ\bar{d}$, in particular the latest polarized $W$-lepton production data from the STAR collaboration at RHIC and semi-inclusive deep inelastic scattering data from COMPASS, allowing the most robust extraction available with minimal theoretical assumptions.我们还提取了一组自一致的古quark极化比$δ\ bar {u}/\ bar {u} $和$δ\ bar {d}/\ bar {d} $，并确定对质子自旋的截断构成的迹象。
We present the first simultaneous global QCD analysis of spin-dependent parton distribution functions alongside their spin-averaged counterparts and pion, kaon, and unidentified hadron fragmentation functions. This analysis includes all data relevant for constraining the polarized light quark sea asymmetry $Δ\bar{u} - Δ\bar{d}$, in particular the latest polarized $W$-lepton production data from the STAR collaboration at RHIC and semi-inclusive deep inelastic scattering data from COMPASS, allowing the most robust extraction available with minimal theoretical assumptions. We also extract a self-consistent set of antiquark polarization ratios $Δ\bar{u}/\bar{u}$ and $Δ\bar{d}/\bar{d}$ and determine the signs of the truncated contributions to the proton spin from the light antiquarks.
