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b-Baryon semi-tauonic decays in the Standard Model
Nuclear Physics B ( IF 2.5 ) Pub Date : 2020-11-26 , DOI: 10.1016/j.nuclphysb.2020.115262
Chao Han , Chun Liu

Within the framework of HQET, ΛbΛcτν¯τ and ΩbΩc()τν¯τ weak decays are studied to the order of 1/mc and 1/mb. Helicity amplitudes are written down. Relevant Isgur-Wise functions given by QCD sum rule and large Nc methods are applied in the numerical analysis. The baryonic R-ratios R(Λc) and R(Ωc()) are obtained.



中文翻译:

标准模型中的b-重子半τ衰变

在HQET的框架内, ΛbΛCτν¯τΩbΩCτν¯τ 弱衰变被研究到 1个/C1个/b。螺旋度振幅被记录下来。QCD和规则给出的相关Isgur-Wise函数和大ñC方法应用于数值分析。重质R比率[RΛC[RΩC 获得。

更新日期:2020-11-27
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