论文标题
在运行2的CMS实验中，质子 - 蛋白碰撞的精确光度测量
Precision luminosity measurement with proton-proton collisions at the CMS experiment in Run 2
论文作者
论文摘要
精确的光度测量对于确定标准模型的基本参数并约束或发现标准模型模型现象以外或发现的LHC横截面测量至关重要。 CMS检测器的发光度已在LHC相互作用点5使用Proton-Proton碰撞在$ \ sqrt {s} = 13 $ TEV期间（2015-2018）。使用梁分离扫描和范德梅尔（VDM）方法获得了绝对光度尺度，并研究了几种系统的不确定性来源，从LHC磁体提供的梁分离的尺度到横向横向方向的Proton Bunch密度分布的空间分量的非脱位性。当将VDM校准应用于整个数据记录时，检测器线性和稳定性测量值对综合光度的总不确定性产生了显着贡献。在2016 - 2018年，据报道的综合光度是束束束强子山脉壁炉的最精确测量之一。
A precision luminosity measurement is essential for LHC cross-section measurements to determine fundamental parameters of the standard model and constrain or discover beyond-the-standard-model phenomena. The luminosity of the CMS detector has been measured at the LHC Interaction Point 5 using proton-proton collisions at $\sqrt{s}=13$ TeV during the Run 2 data-taking period (2015-2018). The absolute luminosity scale is obtained using beam-separation scans and the Van der Meer (VdM) method, and several systematic uncertainty sources are investigated, from the knowledge of the scale of beam separation provided by LHC magnets to the nonfactorizability of the spatial components of proton bunch density distributions in the transverse direction. When the VdM calibration is applied to the entire data-taking period, the detector linearity and stability measurements contribute significantly to the total uncertainty in the integrated luminosity. In 2016-2018, the reported integrated luminosity was among the most precise measurements at bunched-beam hadron colliders.
