论文标题
EIC的Gluon TMD和非弹性$ J/ψ$ leptodutuction
Gluon TMDs and inelastic $J/ψ$ leptoproduction at the EIC
论文作者
论文摘要
我们研究了$ J/ψ$在半包含的深度弹性散射和仍然鲜为人知的Gluon Sivers功能中的$ J/ψ$产生的Sidivers方位角不对称。我们专注于$ J/ψ$低横向动量区域，该区域采用了横向摩托符依赖的广义Parton模型（GPM）及其颜色规数不变扩展（CGI-GPM），其中包括以领先顺序处于领先顺序的最终状态相互作用。我们为Quarkonium形成机制采用非依赖主义QCD（NRQCD）框架，并将我们的未极化横截面和Sivers不对称性与HERA和Compass的可用数据分别比较我们的结果。最后，我们给出了未来电子离子对撞机运动学状态（EIC）的运动状态中不对称性的估计。
We study the Sivers azimuthal asymmetry for $J/ψ$ production in semi-inclusive deep inelastic scattering, and the still poorly known gluon Sivers function. We concentrate on the $J/ψ$ low transverse momentum region, employing the transverse-momentum dependent generalised parton model (GPM), and its colour gauge invariant extension (CGI-GPM), which includes final-state interactions at leading order. We adopt the nonrelativistic QCD (NRQCD) framework for the quarkonium formation mechanism, and compare our results for the unpolarised cross section and the Sivers asymmetry with available data, respectively from HERA and COMPASS. Finally, we give estimates for the asymmetry in the kinematical regime of the future Electron-Ion Collider (EIC).
