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arXiv 1302.2884hep-phhep-ex
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部分子簇射对NLO QCD矢量玻色子融合产生W和Z的影响

Parton Shower Effects on W and Z Production via Vector Boson Fusion at NLO QCD

Franziska Schissler, Dieter Zeppenfeld

摘要:

我们提出了在POWHEG框架下,通过矢量玻色子融合和全轻子衰变在NLO QCD中实现电弱Zjj和Wjj的产生。这些过程是矢量玻色子融合中希格斯粒子搜索的重要背景,但它们也可以被视为研究异常三重矢量玻色子耦合以及中央喷流否决影响的信号过程。与第三个喷流有关的观测量对所用的部分子簇射很敏感,这一事实通过PYTHIA、标准角序HERWIG++簇射和HERWIG++中新的p_T序偶极簇射之间的比较得到了证明。

英文摘要:

We present the implementation of electroweak Zjj and Wjj production via vector boson fusion with fully leptonic decays at NLO QCD in the POWHEG framework. These processes represent an important background to Higgs searches in vector boson fusion, but they also can be seen as signal processes to study anomalous triple vector boson couplings as well as the impact of a central jet veto. Observables related to the third jet are sensitive to the parton shower which is used, a fact which is demonstrated by a comparison between PYTHIA, the standard angular-ordered HERWIG++ shower and the new p_T-ordered Dipole Shower in HERWIG++.

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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