Search for non-resonant production of semi-visible jets using Run 2 data in ATLAS
Search for non-resonant production of semi-visible jets using Run 2 data in ATLAS
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DOI：
10.1016/j.physletb.2023.138324
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发表时间：
2023-05
期刊：
影响因子：
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通讯作者：
Atlas Collaboration
中科院分区：
文献类型：
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作者：
Atlas Collaboration
半可见的喷流，与事件的横向动量的缺失的显着贡献，可以出现在强烈相互作用的黑暗部门。这导致了一个事件拓扑，其中一个射流可以与丢失的横向动量的方向对齐。第一次搜索半可见射流通过在通道介质交换。该分析使用了质子-质子碰撞，积分光度为139 fb− 1，质心能量为13 TeV，由ATLAS探测器在LHC运行2期间收集。没有观察到超过标准模型预测的情况。假设中介体、标准模型夸克和暗夸克之间的耦合强度是统一的，则在95%的置信水平下排除了高达2.7 TeV的中介体质量。耦合强度的上限也来自。
Semi-visible jets, with a significant contribution to the event's missing transverse momentum, can arise in strongly interacting dark sectors. This results in an event topology where one of the jets can be aligned with the direction of the missing transverse momentum. The first search for semi-visible jets produced via at-channel mediator exchange is presented. The analysis uses proton-proton collisions with an integrated luminosity of 139 fb−1and a centre-of-mass energy of 13 TeV, collected with the ATLAS detector during the Run 2 of the LHC. No excess over Standard Model predictions is observed. Assuming a coupling strength of unity between the mediator, a Standard Model quark and a dark quark, mediator masses up to 2.7 TeV are excluded at the 95% confidence level. Upper limits on the coupling strength are also derived.