论文标题
在EIC处的强子横向动量分布上更好的角度
A Better Angle on Hadron Transverse Momentum Distributions at the EIC
论文作者
论文摘要
我们提出了一个可观察的$ q _*$对横向动量依赖（tmd）敏感的$ e n \ to e h x $，其中$ q _*/e_n $纯粹由实验室框架角度定义。在3D测量和强调的测量中，这解决了精确重建小横向动量$ p_ {ht} $的残酷问题。我们证明了$ \ mathrm {d}σ_h / \ mathrm {d} q _*$ for $ q _*\ ll q $具有标准TMD函数的分解化，启用$ q _*$替换为$ q _*$替换$ p_ {ht} $。给出了双角度重建方法，该方法准确地说是QCD中的所有订单，以$ q _*\ ll q $。 $ q _*$可以改善EIC的预期实验分辨率。
We propose an observable $q_*$ sensitive to transverse momentum dependence (TMD) in $e N \to e h X$, with $q_*/E_N$ defined purely by lab-frame angles. In 3D measurements of confinement and hadronization this resolves the crippling issue of accurately reconstructing small transverse momentum $P_{hT}$. We prove factorization for $\mathrm{d} σ_h / \mathrm{d}q_*$ for $q_*\ll Q$ with standard TMD functions, enabling $q_*$ to substitute for $P_{hT}$. A double-angle reconstruction method is given which is exact to all orders in QCD for $q_*\ll Q$. $q_*$ enables an order-of-magnitude improvement in the expected experimental resolution at the EIC.
