在NLO使用POWHEG + MiNLO进行Wbbj生产
Wbbj production at NLO with POWHEG+MiNLO
摘要：
我们提出了一个次领先的订单加部分子簇射事件发生器的生产的W玻色子加两个底夸克和一个喷在强子对撞机，在POWHEG BOX框架实现。充分考虑了W玻色子衰变产物的底质量效应和自旋关联。代码是使用MadGraph4和GoSam的两个可用接口自动生成的，最后一个更新到新版本。我们已经应用的MiNLO处方我们的Wbbj计算，获得有限的微分截面也在消失的射流横向动量的限制。此外，我们比较了几个关键的分布Wbbj生产与下一个领先的订单加上部分子淋浴事件发生器Wbb生产，并研究了他们的因式分解和重整化规模的依赖。最后，我们比较了我们的结果与最近的实验数据从ATLAS和CMS合作。
英文摘要：
We present a next-to-leading order plus parton-shower event generator for the production of a W boson plus two bottom quarks and a jet at hadron colliders, implemented in the POWHEG BOX framework. Bottom-mass effects and spin correlations of the decay products of the W boson are fully taken into account. The code has been automatically generated using the two available interfaces to MadGraph4 and GoSam, the last one updated to a new version. We have applied the MiNLO prescription to our Wbbj calculation, obtaining a finite differential cross section also in the limit of vanishing jet transverse momentum. Furthermore, we have compared several key distributions for Wbbj production with those generated with a next-to-leading order plus parton-shower event generator for Wbb production, and studied their factorization- and renormalization-scale dependence. Finally, we have compared our results with recent experimental data from the ATLAS and CMS Collaborations.
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