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arXiv 0710.4749hep-ph
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在LHC通过矢量玻色子融合产生Higgs的电弱和QCD修正

Electroweak and QCD corrections to Higgs production via vector-boson fusion at the LHC

Mariano Ciccolini, Ansgar Denner, Stefan Dittmaier

摘要:

计算了强子对撞机弱玻色子熔合通道中Higgs玻色子产生的次领先级强相互作用和电弱相互作用的辐射修正。具体来说,计算包括所有弱玻色子融合和夸克-反夸克湮灭图希格斯玻色子生产与两个硬喷流,包括所有相应的干扰。QCD修正的结果证实,以前的近似忽略s-通道图和干扰是非常适合预测希格斯生产专用矢量玻色子融合削减在大型强子对撞机。电弱修正还包括来自入射光子的真实修正和双环阶的领先重希格斯玻色子效应,与QCD修正的大小相同,即对于希格斯玻色子质量高达5%-10%的水平。\sim 700 GeV。一般来说,这两种类型的校正并不简单地重新调整微分分布,但在10%的水平上引起失真。讨论的校正已在一个灵活的蒙特卡罗事件发生器中实现。

英文摘要:

The radiative corrections of the strong and electroweak interactions are calculated at next-to-leading order for Higgs-boson production in the weak-boson-fusion channel at hadron colliders. Specifically, the calculation includes all weak-boson fusion and quark--antiquark annihilation diagrams to Higgs-boson production in association with two hard jets, including all corresponding interferences. The results on the QCD corrections confirm that previously made approximations of neglecting s-channel diagrams and interferences are well suited for predictions of Higgs production with dedicated vector-boson fusion cuts at the LHC. The electroweak corrections, which also include real corrections from incoming photons and leading heavy-Higgs-boson effects at two-loop order, are of the same size as the QCD corrections, viz. typically at the level of 5-10% for a Higgs-boson mass up to \sim 700 GeV. In general, both types of corrections do not simply rescale differential distributions, but induce distortions at the level of 10%. The discussed corrections have been implemented in a flexible Monte Carlo event generator.

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