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Exact Top-Quark Mass Dependence in Hadronic Higgs Production
Physical Review Letters ( IF 8.1 ) Pub Date : 2021-10-12 , DOI: 10.1103/physrevlett.127.162002
M Czakon 1 , R V Harlander 1 , J Klappert 1 , M Niggetiedt 1
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The impact of the finite top-quark mass on the inclusive Higgs production cross section at higher perturbative orders has been an open question for almost three decades. In this Letter, we report on the computation of this effect at next-to-next-to-leading order QCD. For the purely gluonic channel, it amounts to +0.62% relative to the result obtained in the Higgs effective field theory approximation. The formally subleading partonic channels overcompensate this shift, leading to an overall effect of 0.26% at a pp collider energy of 13 TeV, and 0.1% at 8 TeV. This result eliminates one of the main theoretical uncertainties to inclusive Higgs production cross section at the LHC.

中文翻译:

强子希格斯粒子产生中精确的顶夸克质量依赖性

近三十年来,有限顶夸克质量对更高微扰阶次的包容性希格斯产生截面的影响一直是一个悬而未决的问题。在这封信中,我们报告了在次次次前导阶 QCD 下这种效应的计算。对于纯胶子通道,它相当于+0.62%相对于希格斯有效场论近似中获得的结果。形式上的次主导部分通道过度补偿了这种转变,导致了整体效果-0.26%在一个pp对撞机能量为 13 TeV,以及-0.1%8 TeV。这一结果消除了大型强子对撞机包容性希格斯产生截面的主要理论不确定性之一。
更新日期:2021-10-12
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