论文标题
在$ \ sqrt {s} = $ 13 tev中，与符合符合符合符合人的魅力喷气机相关的Z玻色子的差分横截面的测量
Measurement of differential cross sections for Z bosons produced in association with charm jets in pp collisions at $\sqrt{s} =$ 13 TeV
论文作者
论文摘要
测量了差异横截面的测量，用于生产Z实量，其中至少是由PP碰撞中的魅力Quark启动的至少一个喷射，以$ \ sqrt {s} = $ 13 tev。 CMS实验在LHC上记录的数据对应于35.9 fb $^{ - 1} $的集成光度。最终的状态包含Z玻色子的衰减产物的一对电子或万能，以及与硬相互作用中产生的魅力夸克（Quark）启动的射流。与Monte Carlo Event Generators的预测相比，比较了Z Boson的$ P_ \ Mathrm {t} $的差异横截面和$ P_ \ Mathrm {T} $。包容性生产交叉部分405.4 $ \ pm $ 5.6（stat）$ \ pm $ 24.3（exp）$ \ pm $ 3.7（theo）pb，在一个基于信托区域中测量，要求两个lept子都具有$ \vertη\ vert $ $ $ $ $ \ \ \ lt $ 2.4和$ p_ \ p_ \ p_ \ p_ \ mathrm ltm lt test $ ltm lt ltm { $ p_ \ mathrm {t} $ $ \ gt $ 26 GEV，以及一对71-111 GEV的一对，而Charm Jet必须具有$ P_ \ Mathrm {T} $ \ GT $ 30 GEV和$ \vertη\Vertη\ Vert $ $ \ lt $ 2.4。这些是在13 TEV处的质子质子碰撞中这些横截面的第一个测量。
Measurements are presented of differential cross sections for the production of Z bosons in association with at least one jet initiated by a charm quark in pp collisions at $\sqrt{s} =$ 13 TeV. The data recorded by the CMS experiment at the LHC correspond to an integrated luminosity of 35.9 fb$^{-1}$. The final states that contain a pair of electrons or muons that are the decay products of a Z boson, and a jet consistent with being initiated by a charm quark produced in the hard interaction. Differential cross sections as a function of the $p_\mathrm{T}$ of the Z boson and $p_\mathrm{T}$ of the charm jet are compared with predictions from Monte Carlo event generators. The inclusive production cross section 405.4 $\pm$ 5.6 (stat) $\pm$ 24.3 (exp) $\pm$ 3.7 (theo) pb, is measured in a fiducial region requiring both leptons to have $\vertη\vert$ $\lt$ 2.4 and $p_\mathrm{T}$ $\gt$ 10 GeV, at least one lepton with $p_\mathrm{T}$ $\gt$ 26 GeV, and a mass of the pair in the range 71-111 GeV, while the charm jet is required to have $p_\mathrm{T}$ $\gt$ 30 GeV and $\vertη\vert$ $\lt$ 2.4. These are the first measurements of these cross sections in proton-proton collisions at 13 TeV.
