论文标题
小$ x $区域中的强子生产的阈值重新调整
Threshold Resummation for Hadron Production in the Small-$x$ Region
论文作者
论文摘要
我们研究了质子核碰撞中正向快速区域中的单个强子包含性产生。我们发现，近代阶层（NLO）处的长期负面横截面是由较大的负阈值对数贡献驱动的。我们建立了一个分解定理，用于在颜色玻璃冷凝物形式主义中以系统上改进的精度重新召集这些对数。我们证明了如何通过NLO结果中的适当比例选择来实现阈值领先对数精度。与实验数据相关的具有阈值对数的NLO频谱保持积极和令人印象深刻的协议。
We study the single hadron inclusive production in the forward rapidity region in proton-nucleus collisions. We find the long-standing negative cross section at next-to-leading-order (NLO) is driven by the large negative threshold logarithmic contributions. We established a factorization theorem for resumming these logarithms with systematically improvable accuracy within the color glass condensate formalism. We demonstrate how the threshold leading logarithmic accuracy can be realized by a suitable scale choice in the NLO results. The NLO spectrums with the threshold logarithms resummed remain positive and impressive agreements with experimental data are observed.
