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arXiv 0808.3018hep-ph
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在ILC上与W玻色子对有关的Higgs产生的精确预测

Precise predictions for the Higgs production in association with a W-boson pair at ILC

Song Mao, Ma Wen-Gan, Zhang Ren-You, Guo Lei, Wang Shao-Ming

摘要:

在$e^+e^-$直线对撞机上与W玻色子对联合产生的Higgs玻色子是探索Higgs玻色子与矢量规范玻色子之间的耦合以及发现新物理特征的重要过程之一。在国际直线对撞机(ILC)的标准模型(SM)中,描述了${\cal O}(α_{ew})$的完全电弱(EW)辐射修正对这一过程的影响,并研究了最低阶(LO)和EW次领先阶(NLO)修正截面对碰撞能量$\sqrt{s}$和Higg玻色子质量的依赖关系.给出了W玻色子对不变质量的LO和NLO EW修正分布以及末态$W$玻色子和Higgs玻色子的横动量分布。计算结果表明,当$m_H=120 GeV$和$\sqrt{s}$从$300 GeV$增加到$1.2 TeV$时,相对EW辐射修正($δ_{ew}$)在-19.4%到0.2%之间变化。

英文摘要:

The Higgs-boson production in association with a W-boson pair at $e^+e^-$ linear colliders is one of the important processes in probing the coupling between Higgs-boson and vector gauge bosons and discovering the signature of new physics. We describe the impact of the complete electroweak(EW) radiative corrections of ${\cal O}(α_{ew})$ to this process in the standard model(SM) at the International Linear Collider(ILC), and investigate the dependence of the lowest-order(LO) and EW next-to-leading order(NLO) corrected cross sections on colliding energy $\sqrt{s}$ and Higg-boson mass. The LO and NLO EW corrected distributions of the invariant mass of W-boson pair and the transverse momenta of final $W$- and Higgs-boson are presented. Our numerical results show that the relative EW radiative correction($δ_{ew}$) varies from -19.4% to 0.2% when $m_H=120 GeV$ and $\sqrt{s}$ goes up from $300 GeV$ to $1.2 TeV$.

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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