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arXiv · 0710.1927

Diquarks and Λ_{b}\toΛ_c weak decays

Hong-Wei Ke·Xue-Qian Li·Zheng-Tao Wei
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Abstract

In this work we investigate the weak $Λ_{b}\toΛ_c$ semi-leptonic and non-leptonic decays. The light-front quark model and diquark picture for heavy baryons are adopted to evaluate the $Λ_{b}\toΛ_c$ transition form factors. In the heavy quark limit we study the Isgur-Wise function. By fitting the data of the semi-leptonic process we obtain the mass of the light scalar diquark as 817 MeV. The numerical predictions on the branching ratios of non-leptonic decay modes $Λ_{b}\toΛ_c M$ and various polarization asymmetries are made. A comparison with other approaches is discussed.

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Hong-Wei Ke, Xue-Qian Li, Zheng-Tao Wei. 2008-01-23. Diquarks and Λ_{b}\toΛ_c weak decays. https://doi.org/10.1103/physrevd.77.014020

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