论文标题
Gluon轨道角动量的签名
Signature of the gluon orbital angular momentum
论文作者
论文摘要
我们提出了一种可观察到的新颖的，用于实验检测构成质子自旋总和规则的Gluon轨道角动量（OAM）。我们考虑在电子普罗顿散射中独家二重产生中的纵向双自旋不对称，并证明散射电子和质子之间的$ \ cos ϕ $方位角相关性是小$ x $及其与Gluon Helicity相互互动的敏感探针。我们还提供了电子对撞机运动学运动学的横截面的数值估计。
We propose a novel observable for the experimental detection of the gluon orbital angular momentum (OAM) that constitutes the proton spin sum rule. We consider longitudinal double spin asymmetry in exclusive dijet production in electron-proton scattering and demonstrate that the $\cos ϕ$ azimuthal angle correlation between the scattered electron and proton is a sensitive probe of the gluon OAM at small-$x$ and its interplay with the gluon helicity. We also present a numerical estimate of the cross section for the kinematics of the Electron-Ion Collider.
