标题： N$^3$阶QCD下希格斯玻色子对的产生 显示英文标题

标题： Higgs boson pair production at N$^3$LO QCD

摘要： 通过测量希格斯势的自相互作用来理解希格斯势是回答几个重大问题的基础，例如电弱对称性破缺、电弱重子生成、电弱相变和电弱真空稳定性。 探测希格斯势最有希望的方法是在高能对撞机上检测希格斯玻色子对末态。 在本次演讲中，我们报告了一项最近的微扰计算，用于考虑无限顶夸克质量极限近似下的N$^3$低阶QCD辐射修正的二希格斯玻色子胶子融合过程。 有限顶夸克质量效应也通过几种近似方案进行了结合，这些方案在现象学应用中被认为是至关重要的。 我们展示了在$\mathcal{O}(\alpha_s^5)$处非常好的渐进行微扰收敛性，并证明了剩余的尺度不确定性仅在百分之一水平。 显示英文摘要

摘要： Understanding the Higgs potential by measuring its self-interactions is fundamental in answering several big questions, such as electroweak symmetry breaking, electroweak baryogenesis, electroweak phase transition, and electroweak vacuum stability. The most promising way to probe the Higgs potential is to detect Higgs boson pair final state at high-energy colliders. In this talk, we report a recent perturbative calculation for the di-Higgs gluon-fusion process by taking into account N$^3$LO QCD radiative corrections in the approximation of infinite top quark mass limit. Finite top quark mass effects are also incorporated with several approximate schemes, which are known to be crucial in phenomenological applications. We show a very good asymptotic perturbative convergence at $\mathcal{O}(\alpha_s^5)$, and demonstrate that the remaining scale uncertainty is only at percent level.