Czakon Michał, Eschment Felix, Niggetiedt Marco, Poncelet Rene, Schellenberger Tom
Institute for Theoretical Particle Physics and Cosmology, RWTH Aachen University, 52056 Aachen, Germany.
Max-Planck-Institut für Physik, Boltzmannstraße 8, 85748 Garching, Germany.
Phys Rev Lett. 2024 May 24;132(21):211902. doi: 10.1103/PhysRevLett.132.211902.
We evaluate the top-bottom interference contribution to the fully inclusive Higgs production cross section at next-to-next-to-leading order in QCD. Although bottom-quark-mass effects are power suppressed, the accuracy of state-of-the-art theory predictions makes an exact determination of this effect indispensable. The total effect of the interference at 13 TeV is -1.99(1){-0.15}^{+0.30} pb, while the pure O(α{s}^{4}) correction is 0.43 pb. With this result, we address one of the leading theory uncertainties of the cross section.
我们在 QCD 的次下一个领头阶评估了对全包容希格斯玻色子产生截面的上下干扰贡献。尽管底夸克质量效应是幂次压低的，但最先进理论预测的精度使得精确确定这一效应必不可少。在 13 TeV 时干扰的总效应为 -1.99(1){-0.15}^{+0.30} pb，而纯 O(α{s}^{4}) 修正为 0.43 pb。基于此结果，我们解决了该截面的一个主要理论不确定性问题。
