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Electroweak and QCD corrections to Z-boson production with one b jet in a massive five-flavor scheme

机译:大规模五味方案中用一个b射流对Z玻色子产生进行电弱和QCD校正

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We compute the O ( α s α 2 ) and O ( α s 2 α ) contributions to the production cross section of a Z boson with one b jet at the Large Hadron Collider (LHC) and study their phenomenological relevance for LHC physics. The accurate prediction of hadronic Z + b -jet production is needed to control a background that greatly affects both the measurement of Higgs-boson properties and the searches of new physics at the LHC. At the same time it could enable the first precise measurement of the b -quark parton distribution function. In this context b -quark mass effects become relevant and need to be studied with care, both at the level of the hard process and at the level of the initial- and final-state parton evolution. It is the aim of this paper to explore some of these issues in the framework of a massive five-flavor scheme and to assess the need for the inclusion of both electroweak corrections, in addition to QCD corrections, and b -quark mass effects in the prediction of total and differential cross sections for hadronic Z + b -jet production.
机译:我们在大型强子对撞机(LHC)上用一个b射流计算了Z玻色子的生产截面的O(αsα2)和O(αs 2α)贡献,并研究了它们与LHC物理学的现象学相关性。需要精确预测强子酸Z + b射流的产生,以控制对希格斯玻色子性质的测量和大型强子对撞机的新物理学的搜索产生重大影响的背景。同时,它可以对b-夸克帕顿分布函数进行首次精确测量。在这种情况下,b-夸克质量效应变得很重要,需要在硬过程水平以及初始状态和最终状态parton演化水平上进行仔细研究。本文的目的是在大规模五味方案的框架内探讨其中的一些问题,并评估是否需要在QCD校正之外还包括电弱校正和b夸克质量效应。强子Z + b射流生产的总横截面和微分横截面的预测。

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