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arXiv 0909.3420hep-ph
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次次领头阶强子Higgs产生的有限顶质量效应

Finite top mass effects for hadronic Higgs production at next-to-next-to-leading order

Robert V. Harlander, Kemal J. Ozeren

摘要:

用次次领头阶QCD计算了胶子融合中Higgs产生的总包含截面的前四项mH^2/mt^2展开式.一个可靠的和精确的近似的完整的顶部质量的依赖性在NNLO的推导和比较经常使用的重顶极限。据发现,这两个结果同意数值好于0.5%的希格斯质量范围内的100 - 300 GeV。这验证了高阶结果的包容性希格斯截面,并证明了重顶极限作为一个强大的工具,希格斯现象在LHC和Tevatron。

英文摘要:

The first four terms of an expansion in mH^2/mt^2 of the total inclusive cross section for Higgs production in gluon fusion are evaluated through next-to-next-to-leading order QCD. A reliable and precise approximation of the full top mass dependence at NNLO is derived and compared to the frequently used heavy-top limit. It is found that both results agree numerically to better than 0.5% in the Higgs mass range of 100-300 GeV. This validates the higher order results for the inclusive Higgs cross section and justifies the heavy-top limit as a powerful tool for Higgs phenomenology at the LHC and the Tevatron.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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