arXivDaily arXiv每日学术速递 周一至周五更新
看起来今天可以划水了
arXiv 0811.3458hep-phhep-ex
收藏

胶子融合中希格斯玻色子产生的混合QCD-电弱修正

Mixed QCD-electroweak corrections to Higgs boson production in gluon fusion

Charalampos Anastasiou, Radja Boughezal, Frank Petriello

摘要:

用有效的理论方法计算了轻夸克产生希格斯玻色子截面的3圈O(αα s)修正。我们的计算探讨了QCD的因式分解和对这个过程的电弱微扰修正。我们结合我们的结果与目前最好的估计贡献的顶夸克和底夸克,得到一个更新的理论预测的希格斯玻色子生产截面胶子融合。随着使用的MSTW 2008部分子分布函数,包括最新的实验数据,我们的研究结果在横截面约4-6%的中间希格斯玻色子玻色子质量比那些在最近的Tevatron分析,施加了95%的置信水平排除限制的标准模型希格斯玻色子玻色子与M_H=170 GeV。

英文摘要:

We compute the 3-loop O(αα_s) correction to the Higgs boson production cross section arising from light quarks using an effective theory approach. Our calculation probes the factorization of QCD and electroweak perturbative corrections to this process. We combine our results with the best current estimates for contributions from top and bottom quarks to derive an updated theoretical prediction for the Higgs boson production cross section in gluon fusion. With the use of the MSTW 2008 parton distribution functions that include the newest experimental data, our study results in cross sections approximately 4-6% lower for intermediate Higgs boson masses than those used in recent Tevatron analyses that imposed a 95% confidence level exclusion limit of a Standard Model Higgs boson with M_H=170 GeV.

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。

↑