论文标题
proton-proton碰撞中的Z+Jets事件中的Azimuthal相关性在$ \ sqrt {s} $ = 13 TEV
Azimuthal correlations in Z+jets events in proton-proton collisions at $\sqrt{s}$ = 13 TeV
论文作者
论文摘要
在$ \ sqrt {s} $ = 13 TEV中测量与喷气机相关的Z玻色子的产生，该数据与CMS实验记录的LHC记录的数据对应于36.3 fb $^{ - 1} $。用横向动量$ p_ \ mathrm {t} $ $ \ gt $ 30 GEV的飞机的多样性是针对Z Boson的$ P_ \ Mathrm {T} $（Z）的不同区域测量的，从低于10 GEV到100 GEV。 Z玻色子和领先喷气机之间的方位角相关性$ δϕ $以及两个领先喷气机之间的相关性在三个区域中测量$ P_ \ Mathrm {t} $（z）。将测量结果与临时和领导订单的几个预测进行了比较，并与Parton阵雨相连。基于横向摩肌依赖的Parton分布和相应的Parton阵雨的预测很好地描述了多个Parton相互作用和较高JET多重性并不重要的区域中的测量。多个parton相互作用的效果对于正确描述低$ p_ \ mathrm {t} $（z）区域中的测量光谱很重要。
The production of Z bosons associated with jets is measured in pp collisions at $\sqrt{s}$ = 13 TeV with data recorded with the CMS experiment at the LHC corresponding to an integrated luminosity of 36.3 fb$^{-1}$. The multiplicity of jets with transverse momentum $p_\mathrm{T}$ $\gt$ 30 GeV is measured for different regions of the Z boson's $p_\mathrm{T}$(Z), from lower than 10 GeV to higher than 100 GeV. The azimuthal correlation $Δϕ$ between the Z boson and the leading jet, as well as the correlations between the two leading jets are measured in three regions of $p_\mathrm{T}$(Z). The measurements are compared with several predictions at leading and next-to-leading orders, interfaced with parton showers. Predictions based on transverse-momentum dependent parton distributions and corresponding parton showers give a good description of the measurement in the regions where multiple parton interactions and higher jet multiplicities are not important. The effects of multiple parton interactions are shown to be important to correctly describe the measured spectra in the low $p_\mathrm{T}$(Z) regions.
