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arXiv 0909.1064hep-ph
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在ILC对$W^+ W^-Z^0$生产的完全电弱单回路校正

Full electroweak one-loop corrections to $W^+ W^-Z^0$ production at the ILC

Sun Wei, Ma Wen-Gan, Zhang Ren-You, Guo Lei, Song Mao

摘要:

对$e^+e^-$国际直线对撞机(ILC)产生的$W^+ W^-Z^0$的精确研究对于探索大质量矢量规范玻色子之间的耦合和发现标准模型(SM)之外的新物理特征具有至关重要的意义。我们研究了全单圈EW效应对$W$ -玻色子的总截面、不变质量微分截面、$W$ -玻色子之间的夹角分布、$W$ -玻色子和$Z^0$ -玻色子的产生角分布、末态$W$ -玻色子和$Z^0$-玻色子的横动量分布、以及$W^-$ -玻色子的前向-后向电荷不对称性。计算结果表明,当$m_H=120 GeV$和$\sqrt{s}$从$300 GeV$增加到$1 TeV$时,EW相对于总截面的修正($δ_{ew}$)在-18.9%~-5.7%之间变化。

英文摘要:

The precise investigation of the $W^+ W^-Z^0$ production at the $e^+e^-$ International Linear Collider(ILC) is of crucial importance in probing the couplings between massive vector gauge bosons and discovering the signature of new physics beyond the standard model(SM). We study the full one-loop EW effects on the observables, such as, the total cross section, the differential cross section of the invariant mass of $W$-pair, the distribution of the angle between $W$-pair, the production angle distributions of $W$- and $Z^0$-boson, the distributions of the transverse momenta of final $W$- and $Z^0$-boson, and the forward-backward charge asymmetry of $W^-$-boson. Our numerical results show that the EW relative correction to the total cross sections($δ_{ew}$) varies from -18.9% to -5.7% when $m_H=120 GeV$ and $\sqrt{s}$ goes up from $300 GeV$ to $1 TeV$.

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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