论文标题
$ h \ to gg $和$ h \toγγ$在QCD中以近代领先顺序与异常耦合
$h\to gg$ and $h\toγγ$ with Anomalous Couplings at Next-to-Leading Order in QCD
论文作者
论文摘要
我们将$ h \ to gg $的衰减率和$ h \toγγ$的衰减速率的临近订单QCD计算概括为Higgs Boson异常耦合的情况。我们演示了如何基于系统的功率计数，如何在Electroweak手性Lagrangian的框架内以一致的方式进行计算。事实证明，QCD中的NLO中没有出现其他耦合参数，而超出了前所未有的顺序。 QCD的影响很大，对于$ h \ to gg $，QCD的不确定性在NLO中大大降低。 $ h \toγγ$仅受QCD的轻度影响；在这里，NLO治疗实际上消除了不确定性。因此，我们的结果将允许从这些过程中改善对异常的希格斯耦合的确定。还讨论了我们的框架与标准模型有效现场理论的治疗的关系。
We generalize the next-to-leading order QCD calculations for the decay rates of $h\to gg$ and $h\toγγ$ to the case of anomalous couplings of the Higgs boson. We demonstrate how this computation can be done in a consistent way within the framework of an electroweak chiral Lagrangian, based on a systematic power counting. It turns out that no additional coupling parameters arise at NLO in QCD beyond those already present at leading order. The impact of QCD is large for $h\to gg$ and the uncertainties from QCD are significantly reduced at NLO. $h\toγγ$ is only mildly affected by QCD; here the NLO treatment practically eliminates the uncertainties. Consequently, our results will allow for an improved determination of anomalous Higgs couplings from these processes. The relation of our framework to a treatment in Standard Model effective field theory is also discussed.
