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arXiv 0912.2104hep-ph
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有限顶质量下次次次领头阶QCD胶子聚变中Higgs的产生

Higgs production in gluon fusion at next-to-next-to-leading order QCD for finite top mass

Robert V. Harlander, Hendrik Mantler, Simone Marzani, Kemal J. Ozeren

摘要:

用非线性光学QCD方法计算了胶子融合产生Higgs的全过程截面,包括顶夸克质量依赖。这是通过将部分子截面的1/mtop展开与从k_T-因子分解导出的精确的大s帽极限相匹配来实现的。对强子截面的计算精度估计优于1%。最后的结果被证明是在1%的常用有效的理论方法,从而证实了早期的研究结果。

英文摘要:

The inclusive Higgs production cross section from gluon fusion is calculated through NNLO QCD, including its top quark mass dependence. This is achieved through a matching of the 1/mtop expansion of the partonic cross sections to the exact large s-hat limits which are derived from k_T-factorization. The accuracy of this procedure is estimated to be better than 1% for the hadronic cross section. The final result is shown to be within 1% of the commonly used effective theory approach, thus confirming earlier findings.

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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