Precise calculation for heavy gauge boson production in the LHT model

15th International Workshop on Advanced Computing and Analysis Techniques in Physics Research

物理学;计算机科学

Lei, Guo^1 ; Ren-You, Zhang^1 ; Wen-Gan, Ma^1

Department of Modern Physics, University of Science and Technology of China (USTC), Hefei, Anhui 230026, China^1

关键词: Double counting;    Large Hadron Collider;    Leading orders;    Next-to-leading orders;    Pair production;    Perturbative QCD;    Production process;    Renormalization;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/523/1/012054/pdf
DOI  :  10.1088/1742-6596/523/1/012054

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

In the framework of the littlest Higgs model with T parity, we study the WH/Zh+q and WH-pair productions at the CERN Large Hadron Collider up to the QCD next-to-leading order (NLO). The kinematic distributions of final decay products and the theoretical dependence of the cross section on the factorization/ renormalization scale are analyzed. We adopt the PROSPINO scheme in the QCD NLO calculations to avoid double counting and keep the convergence of the perturbative QCD description. By using the subtraction scheme, the QCD NLO corrections enhance the leading order cross section with a K-factor in the range of 1.00 ∼ 1.43 for WH (ZH)q production process, and in the range of 1.09 ∼ 1.22 for the WH pair production process.