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arXiv 1909.08443hep-phhep-ex
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在LHC上研究顶夸克与光子或$Z$玻色子的变味中性流相互作用中的干涉效应

Study of interference effects in the search for flavour-changing neutral current interactions involving the top quark and a photon or a $Z$ boson at the LHC

Maura Barros, Nuno Filipe Castro, Johannes Erdmann, Gregor Geßner, Kevin Kröninger, Salvatore La Cagnina, Ana Peixoto

摘要:

顶夸克的变味中性流相互作用可以在一个顶夸克衰变为一个上型夸克和一个中性玻色子的顶夸克对产生中寻找,也可以在一个顶夸克与这样一个玻色子的单次产生中寻找。如果在单一产生的情况下产生了额外的上型夸克,这两个过程就会相互干扰。这些干扰效应的影响,在大型强子对撞机的味道改变中性电流的搜索研究的情况下,中性玻色子是光子或$Z$玻色子。干扰效应被发现是小于的renormalisation和factorisation规模的变化。

英文摘要:

Flavour-changing neutral-current interactions of the top quark can be searched for in top-quark pair production with one top quark decaying to an up-type quark and a neutral boson, and they can be searched for in the single production of a top quark in association with such a boson. Both processes interfere if an additional up-type quark is produced in the case of single production. The impact of these interference effects on searches for flavour-changing neutral currents at the LHC is studied for the case where the neutral boson is a photon or a $Z$ boson. Interference effects are found to be smaller than variations of the renormalisation and factorisation scales.

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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