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arXiv 1402.0505hep-phhep-ex
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与两架喷气式飞机有关的对$W γ$生产的次领先订单QCD修正

Next-to-leading order QCD corrections to $W γ$ production in association with two jets

Francisco Campanario, Matthias Kerner, Le Duc Ninh, Dieter Zeppenfeld

摘要:

在次领先阶QCD精度下计算了与两个喷注有关的QCD诱导的$W^\pm γ$产生通道。考虑了W玻色子的轻子衰变、全离壳效应和有限宽度效应以及自旋关联。这些过程是超越标准模型物理研究的重要背景,也与检验标准模型的四次规范耦合的性质有关。下一个领先的顺序校正减少了规模的不确定性显着,并显示出非平凡的相空间依赖。我们的代码将作为部分子级蒙特卡罗程序VBFNLO的一部分公开提供。

英文摘要:

The QCD-induced $W^\pm γ$ production channels in association with two jets are computed at next-to-leading order QCD accuracy. The W bosons decay leptonicly and full off-shell and finite width effects as well as spin correlations are taken into account. These processes are important backgrounds to beyond Standard Model physics searches and also relevant to test the nature of the quartic gauge couplings of the Standard Model. The next-to-leading order corrections reduce the scale uncertainty significantly and show a non-trivial phase space dependence. Our code will be publicly available as part of the parton level Monte Carlo program VBFNLO.

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