论文标题
与Atlas的Proton-Proton碰撞中的$ Z $ Boson相关的二行的差异横截面测量值
Differential cross-section measurements for the electroweak production of dijets in association with a $Z$ boson in proton-proton collisions at ATLAS
论文作者
论文摘要
提出了差异横截面测量值，用于与$ z $玻色的两种喷气式飞机产生。这些测量值对矢量 - 玻璃融合生产机制很敏感，并提供了标准模型仪表结构的基本测试。分析是使用Atlas Atlas At $ \ sqrt {s} $ = 13 TEV收集的质子 - 普罗顿碰撞数据进行的，并且集成的发光度为139 fb $^{ - 1} $。 The differential cross-sections are measured in the $Z\rightarrow \ell^+\ell^-$ decay channel ($\ell=e,μ$) as a function of four observables: the dijet invariant mass, the rapidity interval spanned by the two jets, the signed azimuthal angle between the two jets, and the transverse momentum of the dilepton pair.对检测器效率低下和分辨率的影响进行了校正，并且足够精确，可以区分使用Powheg+Pythia8，herwig7+vbfnlo和Sherpa 2.2计算出的不同最新理论预测。差分横截面用于使用尺寸六的有效场理论搜索异常的弱 - 玻色子自身互动。发现差异横截面是两个喷气机之间签名的方位角角度的函数，对标准模型和二六六散射幅度之间的干扰特别敏感，并直接测试了弱玻色子自我接触中的电荷偶性和平价不变性。
Differential cross-section measurements are presented for the electroweak production of two jets in association with a $Z$ boson. These measurements are sensitive to the vector-boson fusion production mechanism and provide a fundamental test of the gauge structure of the Standard Model. The analysis is performed using proton-proton collision data collected by ATLAS at $\sqrt{s}$=13 TeV and with an integrated luminosity of 139 fb$^{-1}$. The differential cross-sections are measured in the $Z\rightarrow \ell^+\ell^-$ decay channel ($\ell=e,μ$) as a function of four observables: the dijet invariant mass, the rapidity interval spanned by the two jets, the signed azimuthal angle between the two jets, and the transverse momentum of the dilepton pair. The data are corrected for the effects of detector inefficiency and resolution and are sufficiently precise to distinguish between different state-of-the-art theoretical predictions calculated using Powheg+Pythia8, Herwig7+Vbfnlo and Sherpa 2.2. The differential cross-sections are used to search for anomalous weak-boson self-interactions using a dimension-six effective field theory. The differential cross-section as a function of the signed azimuthal angle between the two jets is found to be particularly sensitive to the interference between the Standard Model and dimension-six scattering amplitudes and provides a direct test of charge-conjugation and parity invariance in the weak-boson self-interactions.
