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arXiv 0704.3178hep-ex
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在ZEUS使用D* + mu和mu+ mu相关性进行美容生产

Beauty production using D* + mu and mu+ mu- correlations at ZEUS

A. E. Nuncio Quiroz

摘要:

在末态中观测到D* 和/或μ子的事件被用来指示美夸克产生的存在,并研究来自相同或不同B强子的粒子之间的相关性。对这类过程的次主导阶(NLO)理论预测通常只能在部分子水平上得到。基于FMNR程序与PYTHIA 6.2的接口,应用了一种计算NLO处可见水平截面的方法。它使用FMNR提供的b夸克水平的NLO描述,应用统计约化程序(REDSTAT),允许链接到PYTHIA,从那里获得B强子衰变链的描述。比较的数据和非线性截面在可见光和b-夸克水平被发现是一致的和等效的。

英文摘要:

Events with observed D* and/or muons in the final state were used to indicate the presence of beauty quark production and to study the correlations between the particles coming from the same or different B-hadrons. The Next-to-Leading Order (NLO) theoretical predictions for such processes were often available only at parton level. A method to calculate visible level cross sections at NLO, based on an interface of the FMNR program to PYTHIA 6.2, is applied. It uses the NLO description at b-quark level provided by FMNR applying a statistical reduction procedure (REDSTAT) that allows the link to PYTHIA, from where the description of the B-hadron decay chain is obtained. Comparisons of the data and NLO cross sections at visible and b-quark level were found to be consistent and equivalent.

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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