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arXiv 1406.2441hep-ph
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LHT模型中重规范玻色子产生的精确计算

Precise calculation for heavy gauge boson production in the LHT model

Guo Lei, Zhang Ren-You, Ma Wen-Gan

摘要:

在具有$T$宇称的最小Higgs模型的框架下,我们研究了在CERN大型强子对撞机上的$W_H/Z_H+q_-$和$W_H$对的产生,直到QCD次领先阶(NLO).最后的衰变产物的运动学分布和截面的因式分解/重整化尺度的理论依赖进行了分析。在QCD非线性光学计算中,我们采用PROSPINO方案来避免重复计算,并保持微扰QCD描述的收敛性。通过使用减法方案,QCD非线性光学修正在$1.00 \sim 1.43$范围内增强了$W_H(Z_H) q_-$产生过程的首阶截面,在$W_H$产生过程的首阶截面在$1.09 \sim 1.22$范围内增强了QCD非线性光学修正的首阶截面.

英文摘要:

In the framework of the littlest Higgs model with $T$ parity, we study the $W_H/Z_H+q_-$ and $W_H$-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 $1.00 \sim 1.43$ for $W_H(Z_H) q_-$ production process, and in the range of $1.09 \sim 1.22$ for the $W_H$ pair production process.

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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