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arXiv 1801.05025hep-exhep-ph
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CMS中的顶夸克模型和生成子

Top Quark Modeling and Generators in CMS

Efe Yazgan

摘要:

最近顶夸克事件建模研究所做的大型强子对撞机质子-质子碰撞数据收集与CMS探测器在质量中心的能量为8和13 TeV和国家的最先进的理论预测进行了总结。提出了一种新的部分子簇射不确定度因子分解方法。一个顶夸克特定的PYTHIA 8 CMS调,随着曲调使用新的颜色重联模型,进行了讨论。有一个一致的选择的部分子分布函数的矩阵元素和部分子淋浴的可能性证明了与领先,下一个领先,和下一个到下一个到领先的顺序版本的NNPDF3.1集相比,最小的偏差和潜在的事件数据构建的曲调。

英文摘要:

Recent top quark event modeling studies done using LHC proton-proton collision data collected with the CMS detector at centre of mass energies of 8 and 13 TeV and state-of-the-art theoretical predictions are summarized. A new factorized approach for parton shower uncertainties is presented. A top quark specific PYTHIA8 CMS tune, along with tunes using new color reconnection models, is discussed. The possibility of having a consistent choice of parton distribution function in the matrix element and the parton shower is demonstrated with tunes constructed with leading, next-to-leading, and next-to-next-to-leading order versions of NNPDF3.1 set compared to minimum bias and underlying event data.

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