Precise QCD predictions on W(H)Z(H) production in the littlest Higgs model with T parity at the LHC

Precise QCD predictions on W(H)Z(H) production in the littlest Higgs model with T parity at the LHC
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在大型强子对撞机上具有 T 宇称的最小希格斯模型中对 W(H)Z(H) 产生的精确 QCD 预测

DOI:
10.1103/physrevd.87.034034
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发表时间:
2013-02
期刊:
Physical Review D - Particles, Fields, Gravitation and Cosmology
影响因子:
--
通讯作者:
Chen Liang-Wen
Chen Liang-Wen
中科院分区:
其他
文献类型:
--
作者:
Liu Wen;Zhang Ren-You;Guo Lei;Ma Wen-Gan;Chen Liang-Wen

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相似文献

我们研究了在CERN大型强子对撞机(LHC)上,最小的Higgs模型(直到QCD次前级(NLO))对$W_H^{\pm}Z_H$产生的影响,并讨论了最终衰变产物的运动学分布和截面与因子化/重整化尺度的理论关系。我们发现QCD非线性光学修正降低了在$\MU_F=\MU_R$情况下前序截面的标度不确定性。通过采用PROSPINO减法(方案(II))分析QCD的非线性贡献,我们可以得到保持微扰QCD描述的收敛的数值结果。我们采用方案(II)在$14{Rm TeV}$($8{Rm TeV}$)LHC的结果表明,对于$W_H^+Z_H$产生的$K$因子在$1.01\sim 1.10$($1.00\sim 1.08$)的范围内变化,而对于$W_H^-Z_H$产生的$K$因子在$1.11\sim 1.13$($1.11\sim 1.12$)的范围内变化,当整体对称破缺标度$f$从$400{Rm GeV}$到$1.5{Rm TeV}$($1{Rm TeV}$)时。
We investigate the effects of the littlest Higgs model with $T$ parity up to the QCD next-to-leading order (NLO) on the $W_H^{\pm} Z_H$ productions at the CERN Large Hadron Collider (LHC), and discuss the kinematic distributions of final decay products and the theoretical dependence of the cross section on the factorization/renormalization scale. We find the QCD NLO corrections reduce the scale uncertainty of the leading order cross section in case of $\mu_F=\mu_R$. By adopting the PROSPINO subtraction scheme (scheme (II)) in analysing the QCD NLO contributions, we can obtain the numerical results which keep the convergence of the perturbative QCD description. Our results by adopting scheme (II) at the $14 {\rm TeV}$ ($8 {\rm TeV}$) LHC show that the $K$-factor for the $W_H^+ Z_H$ production varies in the range of $1.01 \sim 1.10$ ($1.00 \sim 1.08$), while the $K$-factor for the $W_H^- Z_H$ production varies in the range of $1.11 \sim 1.13$ ($1.11 \sim 1.12$), when the global symmetry breaking scale $f$ goes from $400 {\rm GeV}$ to $1.5 {\rm TeV}$ ($1 {\rm TeV}$).
DOI: 10.22323/1.114.0026
发表时间: 2010-12
期刊: --
影响因子: --
作者:
T. Plehn;C. Weydert
通讯作者: T. Plehn;C. Weydert
DOI: --
发表时间: 2000-07
期刊: arXiv: High Energy Physics - Phenomenology
影响因子: --
作者:
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通讯作者: R. Barbieri;A. Strumia
DOI: --
发表时间: 2011-09
期刊: arXiv: High Energy Physics - Experiment
影响因子: --
作者:
D. Olivito;for the Atlas collaboration
通讯作者: D. Olivito;for the Atlas collaboration