在胶子融合中完成次领先订单QCD修正到ZZ生产

IF 8.1 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Physical review letters Pub Date : 2025-01-22 DOI:10.1103/physrevlett.134.031901

Bakul Agarwal, Stephen Jones, Matthias Kerner, Andreas von Manteuffel

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引用次数: 0

摘要

我们计算了环诱导的gg→ZZ产生的完整次领先阶（NLO） QCD修正，包括完整的顶夸克质量效应。双环虚修正是通过结合无质量、希格斯介导和单环可因式贡献的分析结果与包含顶夸克质量的数值计算振幅来获得的。我们表明，虚拟贡献的减法方案的选择影响了为了获得足够精确的现象学预测而必须评估虚拟贡献的精度。对于通过大质量顶夸克环直接产生，我们观察到相对NLO修正很大。在高玻色子不变质量时，直接质量和希格斯介导的贡献分别相对于无质量的产生增加，但相互干扰。在大型强子对撞机上，NLO对胶子通道的修正对N3LO的pp→ZZ+X横截面有相当大的贡献。2025年由美国物理学会出版

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Complete Next-to-Leading Order QCD Corrections to ZZ Production in Gluon Fusion

We calculate the complete next-to-leading order (NLO) QCD corrections to loop-induced gg→ZZ production including full top-quark mass effects. The two-loop virtual corrections are obtained by combining analytic results for the massless, Higgs-mediated, and one-loop factorizable contributions with numerically computed amplitudes containing the top-quark mass. We show that the choice of subtraction scheme for the virtual contribution impacts the precision with which the virtual contribution must be evaluated in order to obtain sufficiently precise phenomenological predictions. For direct production through a massive top-quark loop, we observe that the relative NLO corrections are large. The direct massive and Higgs-mediated contributions individually increase relative to the massless production at high diboson invariant mass, but interfere destructively with each other. At the Large Hadron Collider, the NLO corrections to the gluon channel give a sizable contribution to the pp→ZZ+X cross section at N3LO.

Published by the American Physical Society

2025

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来源期刊

Physical review letters 物理-物理：综合

CiteScore

16.50

自引率

7.00%

发文量

2673

审稿时长

2.2 months

期刊介绍： Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics: General physics, including statistical and quantum mechanics and quantum information Gravitation, astrophysics, and cosmology Elementary particles and fields Nuclear physics Atomic, molecular, and optical physics Nonlinear dynamics, fluid dynamics, and classical optics Plasma and beam physics Condensed matter and materials physics Polymers, soft matter, biological, climate and interdisciplinary physics, including networks