论文标题
在LHC上使用ATLAS检测器的大型$ B $ -JET多重性事件中的标准模型搜索超出标准模型的现象
Search for phenomena beyond the Standard Model in events with large $b$-jet multiplicity using the ATLAS detector at the LHC
论文作者
论文摘要
搜索以高喷射多样性，没有瘦素（电子或妈妈）和四个或更多的喷气机为特征的事件中的新现象，并源自$ b $ -Quarks（$ b $ -Jets）的碎片。该搜索使用$ \ sqrt {s} $ = 139 fb $^{ - 1} $ = 13 tev proton-proton碰撞数据在运行2中大型强子对撞机的Atlas实验收集的数据。搜索中使用的多重性。没有观察到与标准模型预期的显着过多，并且确定了限制简化的R-Pa-Parity侵入超对称模型的95％置信度限制。在所考虑的模型中，排除限制达到了顶峰质量的950 GEV。
A search is presented for new phenomena in events characterised by high jet multiplicity, no leptons (electrons or muons), and four or more jets originating from the fragmentation of $b$-quarks ($b$-jets). The search uses 139 fb$^{-1}$ of $\sqrt{s}$ = 13 TeV proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider during Run 2. The dominant Standard Model background originates from multijet production and is estimated using a data-driven technique based on an extrapolation from events with low $b$-jet multiplicity to the high $b$-jet multiplicities used in the search. No significant excess over the Standard Model expectation is observed and 95% confidence-level limits that constrain simplified models of R-parity-violating supersymmetry are determined. The exclusion limits reach 950 GeV in top-squark mass in the models considered.
