We discuss the Drell–Yan dilepton production using the transverse momentum dependent parton distributions evolved with the Catani–Ciafaloni–Fiorani–Marchesini–Kwieciński (CCFM-K) equations in the single loop approximation. Such equations are obtained assuming angular ordering of emitted partons (coherence) for \(x\sim 1\) and transverse momentum ordering for \(x \ll 1\). This evolution scheme also contains the Collins–Soper–Sterman (CSS) soft gluon resummation. We make a comparison with a broad class of data on transverse momentum spectra of low mass Drell–Yan dileptons.

中文翻译：

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Drell–Yan生产CCFM-K技术

我们在单回路逼近中使用与卡塔尼-齐法洛尼-菲奥拉尼-马切西尼-科维辛斯基（CCFM-K）方程演化的横向动量依赖的Parton分布讨论Drell-Yan dilepton的产生。假设\（x \ sim 1 \）的发射声子的角顺序（相干性）和\（x \ ll 1 \）的横向动量顺序来获得这样的方程。此演化方案还包含Collins-Soper-Sterman（CSS）软胶子恢复。我们对低质量Drell-Yan轻质子的横向动量谱的大量数据进行了比较。