A search for dijet resonances in events with at least one isolated charged lepton is performed using 139 fb−1 of √ s = 13 TeV proton–proton collision data recorded by the ATLAS detector at the LHC. The dijet invariant-mass (mjj) distribution constructed from events with at least one isolated electron or muon is searched in the region 0.22 < mjj < 6.3 TeV for excesses above a smoothly falling background from Standard Model processes. Triggering based on the presence of a lepton in the event reduces limitations imposed by minimum transverse momentum thresholds for triggering on jets. This approach allows smaller dijet invariant masses to be probed than in inclusive dijet searches, targeting a variety of new-physics models, for example ones in which a new state is produced in association with a leptonically decaying W or Z boson. No statistically significant deviation from the Standard Model background hypothesis is found. Limits on contributions from generic Gaussian signals with widths ranging from that determined by the detector resolution up to 15% of the resonance mass are obtained for dijet invariant masses ranging from 0.25 TeV to 6 TeV. Limits are set also in the context of several scenarios beyond the Standard Model, such as the Sequential Standard Model, a technicolor model, a charged Higgs boson model and a simplified Dark Matter model.

中文翻译：

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使用 ATLAS 探测器收集的 $$ \sqrt{s} $$ = 13 TeV 质子 - 质子碰撞数据，在具有孤立带电轻子的事件中搜索双射共振

使用 139 fb-1 of √ s = 13 TeV 质子 - 质子碰撞数据，在 LHC 上的 ATLAS 探测器记录，在具有至少一个孤立带电轻子的事件中搜索双射流共振。在 0.22 < mjj < 6.3 TeV 的区域内搜索由具有至少一个孤立电子或 μ 子的事件构建的 dijet 不变质量 (mjj) 分布，以寻找超出标准模型过程平滑下降背景的过量。基于事件中轻子的存在触发减少了触发喷射的最小横向动量阈值所施加的限制。这种方法允许探测比包容性 dijet 搜索更小的 dijet 不变质量，针对各种新物理模型，例如与轻子衰变的 W 或 Z 玻色子相关联产生新状态的模型。没有发现与标准模型背景假设的统计显着偏差。对于范围从 0.25 TeV 到 6 TeV 的双射流不变质量，获得了对一般高斯信号贡献的限制，其宽度范围从由探测器分辨率确定的宽度到共振质量的 15%。在标准模型之外的几个场景中也设置了限制，例如顺序标准模型、彩色模型、带电希格斯玻色子模型和简化的暗物质模型。