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arXiv 1505.03418hep-ph
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在标准模型和新物理下Lambda-b的半轻子衰变

Semi-leptonic Decay of Lambda-b in the Standard Model and with New Physics

Wanwei Wu

摘要:

重夸克衰变为检验标准模型提供了一个非常有利的研究手段。近年来,随着对\textit{b}夸克的实验研究以及对B工厂产生的大量数据集的分析,人们对相对\textit{b}夸克衰变的研究和测量越来越多。在这篇论文中,我计算了半轻子衰变过程$Λ_{b}\to Λ_{c}τ\barν_τ$中的各种观测量,包括在SM中以及在具有不同Lorentz结构的新物理(NP)算符存在下的观测量。这些结果与欧洲核子研究中心大型强子对撞机(LHC)\textit{b}实验即将进行的半轻子衰变测量相关,并且还提供了理论预测,以完善超越SM的物理学。

英文摘要:

Heavy quark decays provide a very advantageous investigation to test the Standard Model (SM). Recently, promising experiments with \textit{b} quark, as well as the analysis of the huge data sets produced at the B factories, have led to an increasing study and sensitive measurements of relative \textit{b} quark decays. In this thesis, I calculate various observables in the semi-leptonic decay process $Λ_{b}\to Λ_{c}τ\barν_τ$ both in the SM and in the presence of New Physics (NP) operators with different Lorentz structures. The results are relevant for the coming measurement of this semi-leptonic decay at LHC \textit{b} experiment in CERN, and also provide theoretical predictions to refine the physics beyond the SM.

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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