论文标题
$ w^{+} w^{ - } $生产的测量启发于搜索electroweak supersymmetry
Measurements of $W^{+}W^{-}$ production in decay topologies inspired by searches for electroweak supersymmetry
论文作者
论文摘要
本文介绍了$ w^{+} w^{ - } $在质子 - 普罗顿碰撞中的$ w^{+} w^{ - } $生产的衡量标准，该伙伴在$ \ sqrt {s} = 13 $ tev与Atlas Experiment在大型Hadron Coldider上使用的大型Hadron Collider使用与集成的数据集相对应的139 fb $ $ $^$^$^$^ - 1}。恰好研究了一个电子，一个muon和无辐射喷头的事件。进行测量的基准区域的灵感来自于搜索对两勒普顿最终状态的超对称charginos衰减的electrypymmemetric Charginos的搜索。所选事件具有缺失的横向动量的中等值和“ Stransverse质量”变量$ M _ {\ textrm {t2}} $，该值广泛用于搜索LHC的超对称性。选择这些变量的范围，以便对直接$ w^{+} w^{ - } $生产增强接受，并通过顶级夸克（Top Quarks）抑制生产，该夸克被视为背景。测量了六个变量的基准横截面和粒子水平差分横截面，并将其与来自扰动QCD计算的两个理论SM预测进行了比较。
This paper presents a measurement of fiducial and differential cross-sections for $W^{+}W^{-}$ production in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS experiment at the Large Hadron Collider using a dataset corresponding to an integrated luminosity of 139 fb$^{-1}$. Events with exactly one electron, one muon and no hadronic jets are studied. The fiducial region in which the measurements are performed is inspired by searches for the electroweak production of supersymmetric charginos decaying to two-lepton final states. The selected events have moderate values of missing transverse momentum and the `stransverse mass' variable $m_{\textrm{T2}}$, which is widely used in searches for supersymmetry at the LHC. The ranges of these variables are chosen so that the acceptance is enhanced for direct $W^{+}W^{-}$ production and suppressed for production via top quarks, which is treated as a background. The fiducial cross-section and particle-level differential cross-sections for six variables are measured and compared with two theoretical SM predictions from perturbative QCD calculations.
