论文标题
在lambda_b semi-leptonic衰减的差衰变宽度中搜索新物理
Searching for New Physics in the Differential Decay Width of a Lambda_b Semi-leptonic Decay
论文作者
论文摘要
我们建议研究新物理学在半leptonic顺序衰减中的影响$λ_b\toλ_c（\至λπ）τ{\barν}_τ$。首先，我们编写了该过程的差衰变宽度的一般，独立的，非交流的表达。然后，我们根据三种不同类型的新物理相互作用来计算可观察到的，这可能会用标准模型预测来解释数据的张力。我们发现，差衰变宽度的某些系数对假定的相互作用敏感。我们建议的测量似乎是可行的。
We propose to investigate the effects of new physics in the semi-leptonic sequential decay $Λ_b \to Λ_c (\to Λπ) τ{\bar ν}_τ$. Firstly, we write the general, model independent, non-covariant expression of the differential decay width of the process. Then, we calculate that observable according to three different types of new physics interactions, which might explain the tension of data with the standard model predictions. We find that some coefficients of the differential decay width are sensitive to the kind of interaction that is assumed. The measurements that we suggest seem to be feasible.
