Within the QCD k_t-factorization approach, the cross sections for the processes of Higgs boson inclusive production and decay at LHC energies are derived. The calculus relies on transverse-momentum-dependent unintegrated gluon distribution functions in the proton obtained by numerically solving the Catani-Ciafaloni-Fiorani-Marchesini (CCFM) equation. On the whole, the ATLAS and CMS measurements of differential cross sections for the Higgs boson production at collision energies of 8 and 13 TeV are adequately reproduced. Our results demonstrate that, with the QCD k_t-factorization approach, higher order perturbative corrections are effectively taken into account. The dependence of the results obtained on the form of the unintegrated gluon distribution is investigated.

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QCD kt中的LHC的包容性希格斯玻色子生产-分阶段化方法

在QCD k _t分解方法中，推导了在LHC能量下希格斯玻色子包容产生和衰减过程的横截面。该演算依赖于通过数值求解Catani-Ciafaloni-Fiorani-Marchesini（CCFM）方程获得的质子中与横向动量相关的非积分胶子分布函数。总体而言，在碰撞能量为8 TeV和13 TeV时，希格斯玻色子产生的微分截面的ATLAS和CMS测量得到了足够的再现。我们的结果表明，随着QCD k _t分解法，有效地考虑了高阶微扰校正。研究了所得结果对非积分胶子分布形式的依赖性。