论文标题
通过顶部限制三重Gluon操作员
Towards constraining triple gluon operators through tops
论文作者
论文摘要
有效的现场理论技术为我们提供了重要的工具，可以以相对独立的方式探测标准模型以外的物理学。在这项工作中，我们通过研究其对LHC的顶级生产的影响，尤其是$ P_T $和$ M_ {t \ bar {t \ bar {t}} $尾巴，从而对CP-E-E-6 dimension-6纯Gluonic操作员进行研究。基于剪切的分析表明，仅此操作员在95％C.L.时有助于生产过程时，新物理学的规模大于3.4 TEV，与使用同一信道从Run-I数据获得的850 GEV的结合相比，这是一个强大的结合。使用机器学习技术的分析可以加强这一点。我们的研究补充了类似的研究，这些研究集中在其他对撞机渠道上，以研究该操作员。
Effective field theory techniques provide us important tools to probe for physics beyond the Standard Model in a relatively model-independent way. In this work, we revisit the CP-even dimension-6 purely gluonic operator to investigate the possible constraints on it by studying its effect on top-pair production at the LHC, in particular the high $p_T$ and $m_{t\bar{t}}$ tails of the distribution. Cut-based analysis reveals that the scale of New Physics when this operator alone contributes to the production process is greater than 3.4 TeV at 95% C.L., which is a much stronger bound compared to the bound of 850 GeV obtained from Run-I data using the same channel. This is reinforced by an analysis using Machine Learning techniques. Our study complements similar studies that have focussed on other collider channels to study this operator.
