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arXiv 2201.02378hep-ph
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关于在LHC上进行$t\bar{t}+$ PDKEEPAAB检索的排除界限

On the exclusion limits in $t\bar{t}+$DM searches at the LHC

Jonathan Hermann

摘要:

在这些诉讼中,我们讨论了高阶校正和壳外效应的信号强度排除限制的计算在$t\bar{t}+$ DM搜索在大型强子对撞机的重要性。我们目前的限制自旋0 s通道介质模型使用国家的最先进的非线性光学QCD预测与相关的$t\bar{t}$和$t\bar{t}Z$背景过程的完全离壳效应。然后将这些与使用窄宽度近似或LO计算的不太复杂的预测进行比较,以评估各自的影响。

英文摘要:

In these proceedings we discuss the importance of higher-order corrections and off-shell effects for the calculation of signal strength exclusion limits in $t\bar{t}+$DM searches at the Large Hadron Collider. We present limits for the spin-0 s-channel mediator model using state-of-the-art NLO QCD predictions with full off-shell effects for the relevant $t\bar{t}$ and $t\bar{t}Z$ background processes. These are then compared to less sophisticated predictions using either the narrow-width approximation or LO calculations in order to asses the respective effects.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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