论文标题
QCD在单个强子横向动量分布上与推力轴重新召开
QCD resummation on single hadron transverse momentum distribution with the thrust axis
论文作者
论文摘要
我们得出单个强子产生的不偏振横向动量分布（$ j_t $）的横向动量依赖性（TMD）分解和重新召开公式，并在电子峰值碰撞中使用推力轴。考虑了两个不同的运动区域，包括小横向动量限制$ j_t \ ll q $，以及联合横向动量和阈值限制$ j_t \ ll q（1-z_h）\ ll q $，其中$ q $和$ q $和$ z_h $是硬散射能量和观察到的Hadron Moment fraction。使用有效的理论方法，我们将对数$ \ ln（q/j_t）$和$ \ ln（1-Z_H）$恢复对所有订单。最后，我们介绍了针对包含带电的Pion生产计算的差分横截面和高斯宽度，发现我们的结果与Belle协作报告的测量结果一致。
We derive the transverse momentum dependent (TMD) factorization and resummation formula of the unpolarized transverse momentum distribution ($j_T$) for the single hadron production with the thrust axis in electron-positron collision. Two different kinematic regions are considered, including small transverse momentum limit $j_T \ll Q$, and joint transverse momentum and threshold limit $j_T \ll Q(1-z_h) \ll Q$, where $Q$ and $z_h$ are the hard scattering energy and the observed hadron momentum fraction. Using effective theory methods, we resum logarithms $\ln(Q/j_T)$ and $\ln(1-z_h)$ to all orders. In the end we present the differential cross sections and Gaussian widths calculated for the inclusive charged pion production and find that our results are consistent with the measurements reported by the Belle collaboration.
