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arXiv 0905.1894hep-ph
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在LHC上希格斯玻色子和重夸克的联合产生:用kt-因子分解的预言

Associated production of Higgs boson and heavy quarks at the LHC: predictions with the kt-factorization

A. V. Lipatov, N. P. Zotov

摘要:

在kt-因子分解方法的框架下,我们研究了在CERN LHC对撞机条件下与重(美或顶)夸克对相关的希格斯玻色子玻色子的产生。我们的考虑主要是基于离壳层胶子-胶子融合子过程g + g -> Q + Q + H。首次计算了相应的矩阵元平方。我们研究了bbH和ttH产生的总和微分截面,同时考虑到q + q -> Q + Q + H机制的不可忽略的贡献。在数值计算中,我们使用了从CCFM演化方程得到的未积分胶子分布。我们的结果进行了比较的领导和次领导的顺序预测的共线因式分解的QCD。

英文摘要:

In the framework of the kt-factorization approach, we study the production of Higgs bosons associated with a heavy (beauty or top) quark pair at the CERN LHC collider conditions. Our consideration is based mainly on the off-shell gluon-gluon fusion suprocess g + g -> Q + Q + H. The corresponding matrix element squared have been calculated for the first time. We investigate the total and differential cross sections of bbH and ttH production taking into account also the non-negligible contribution from the q + q -> Q + Q + H mechanism. In the numerical calculations we use the unintegrated gluon distributions obtained from the CCFM evolution equation. Our results are compared with the leading and next-to-leading order predictions of the collinear factorization of QCD.

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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