论文标题
审查CMS的正向物理和衍射结果
Review of results on forward physics and diffraction by CMS
论文作者
论文摘要
介绍了CMS合作在小量子物理学，衍射和物理学上的量子染色体动力学限制（QCD）的结果。特别是，在讨论了两种最外层喷气机在大型快速间隔中分离的事件中，两种喷气机之间的方位角角度向相关的结果。此外，还提出了基于两个被大速度差距（辐射间隔空隙）分离的两种喷气机的产生的结果。这些Dijet生产过程有望对Balitsky-Fadin-Kuraev-Lipatov（BFKL）的演化效果敏感。我们重点介绍了包容性前向喷气式喷气生产和质子铅碰撞中的独家矢量介子生产的结果，质子铅碰撞中，饱和效应可能起作用，可在小$ x $和$ x $和$ x $中访问gluon密度。提出了基于包容性$ z $玻色子的产生，最小偏置事件中带电的粒子光谱以及正向伪属性中的能量密度的基础事件活动研究的摘要。这些研究为蒙特卡洛事件发生器调整提供了有价值的输入，并基于扰动和非扰动QCD技术进行了测试预测。
Results by the CMS Collaboration on forward physics, diffraction, and physics in the small-$x$ limit of quantum chromodynamics (QCD), are presented. In particular, results on azimuthal angle decorrelations between two jets in events where two outermost jets are separated by a large rapidity interval are discussed. In addition, results based on the production of two jets separated by a large rapidity gap (interval void of radiation) are presented. These dijet production processes are expected to be sensitive to Balitsky-Fadin-Kuraev-Lipatov (BFKL) evolution effects. We highlight results on inclusive forward jet production and on exclusive vector meson production in proton-lead collisions, which access gluon densities in the small-$x$ and $Q^2$ where saturation effects may play a role. A summary of results on underlying event activity studies based on inclusive $Z$ boson production, charged particle spectra in minimum bias events, and energy density in forward pseudorapidities is presented. These studies provide valuable inputs for Monte Carlo event generator tuning, and test predictions based on perturbative and non-perturbative QCD techniques.
