LHCb的顶对生产截面

Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018) Pub Date : 2018-09-27 DOI:10.22323/1.321.0241

D. Lucchesi

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引用次数: 0

摘要

顶夸克的产生和衰减特性在标准模型之外的几种情况下对新的物理学很敏感。LHCb是唯一可以在正向区域研究顶夸克的实验，因此，它的产生机制不同于ATLAS和CMS实验。在$\sqrt{s}= 7,8 $ TeV下进行了正向区域的第一次截面测量。在LHCb中，最精确的测定是使用在$\sqrt{s}=13$ TeV处收集的数据，需要具有$b$射流和两个轻子(介子和电子)的最终态，它们来自$W$衰变。对这些测量进行了描述，并与理论进行了比较。

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Top pair production cross sections at LHCb

The production and decay properties of the top-quark are sensitive to new physics in several scenarios beyond the Standard Model. LHCb is the only experiment where the top-quark can be studied in the forward region exploiting, therefore, production mechanisms different from ATLAS and CMS experiments. The first cross section measurement in the forward region has been performed at $\sqrt{s}=7, 8$ TeV. The most precise determination at LHCb uses data collected at $\sqrt{s}=13$ TeV requiring final states with a $b$-jet and two leptons, muon and electron, coming from the $W$ decay. A description of these measurements is provided together with comparison with theories.

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Proceedings of Sixth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2018)

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