论文标题

$ h \ toγγ$ to $α_s$中的所有订单中的所有订单$β_0$ qcd的极限

$H\to γγ$ to all orders in $α_s$ in the large-$β_0$ limit of QCD

论文作者

Boito, D., Neves, G. das, Piclum, J.

论文摘要

在本说明中,我们介绍了QCD校正将希格斯玻色子腐烂成两个光子的结果,在QCD的$β_0$限制中,为重型膨胀中的前两个术语提供了结果。从我们的结果来看,可以轻松阅读以分析形式的确切领先 - $ n_f $ QCD贡献,以$α_s$中的所有订单,其中$ n_f $是无质量夸克的数量,并确定领先的肾上腺素奇异性。我们在6和7循环时为领先的$ N_F $系数提供明确的结果,并使用大的$β_0$结果推测对QCD系列的未知(但小)高阶贡献的大小。

In this note, we present the result for the QCD corrections to the decay of the Higgs boson into two photons in the large-$β_0$ limit of QCD, providing the first two terms in the heavy-top expansion. From our results, one can easily read off the exact leading-$n_f$ QCD contributions in analytic form to all orders in the strong coupling, $α_s$, where $n_f$ is the number of massless quarks, and identify the leading renormalon singularities. We give explicit results for the leading-$n_f$ coefficients at 6 and 7 loops and use the large-$β_0$ result to speculate about the size of yet unknown (but small) higher-order contributions to the QCD series.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源