论文标题
在$ \ sqrt {s} = $ 13 TEV的质子proton碰撞中搜索超对称性
Search for supersymmetry in proton-proton collisions at $\sqrt{s} =$ 13 TeV in events with high-momentum Z bosons and missing transverse momentum
论文作者
论文摘要
在事件中搜索新物理学，并提出了两个高度洛伦兹增强的Z玻色子和大型缺失的横向动量的搜索。分析的质子 - 普罗顿碰撞数据对应于137 fb $^{ - 1} $的集成光度，以$ \ sqrt {s} = $ 13 TEV记录，由CERN LHC的CMS实验记录。该搜索利用较大半径的喷气机的子结构来识别z玻色子衰变的夸克对。标准模型过程的背景被喷射质量和缺失的横向动量的要求抑制。超出标准模型预期的背景事件的数量，事件产量中未观察到明显的过剩。对于简化的超对称模型，其中Z玻色子是由Gluinos衰减产生的，Gluino质量的1920 GEV排除限制为95％的置信度。这是第一次搜索超出标准模型的增压Z玻色子以及大缺失的横向动量。
A search for new physics in events with two highly Lorentz-boosted Z bosons and large missing transverse momentum is presented. The analyzed proton-proton collision data, corresponding to an integrated luminosity of 137 fb$^{-1}$, were recorded at $\sqrt{s} =$ 13 TeV by the CMS experiment at the CERN LHC. The search utilizes the substructure of jets with large radius to identify quark pairs from Z boson decays. Backgrounds from standard model processes are suppressed by requirements on the jet mass and the missing transverse momentum. No significant excess in the event yield is observed beyond the number of background events expected from the standard model. For a simplified supersymmetric model in which the Z bosons arise from the decay of gluinos, an exclusion limit of 1920 GeV on the gluino mass is set at 95% confidence level. This is the first search for beyond-standard-model production of pairs of boosted Z bosons plus large missing transverse momentum.
