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arXiv · 1910.07909

Light-Cone Sum Rules Analysis of $Ξ_{QQ^{\prime}}\toΣ_{Q^{\prime}}$ Weak Decays

Xiao-Hui Hu·Yu-Ji Shi
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Abstract

As a continuation of our previous work, we investigate the weak decays of doubly-heavy baryons $Ξ_{QQ^{\prime}}$ into sextet $Σ_{Q^{\prime}}$ with light-cone sum rules. We calculate the form factors for these decays with the parallel light-cone distribution amplitudes of $Σ_{Q^{\prime}}$. Numerical results of these form factors are used to predict the decay widths and branching ratios of the corresponding semi-leptonic processes. Parametric uncertainties and theoretical analyses are also given in detail. We find that the decay widths of $Ξ_{cc}$ and $Ξ_{bc}$ decays are several orders of magnitude larger than those of $Ξ_{bb}$ decays.

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Xiao-Hui Hu, Yu-Ji Shi. 2020-01-09. Light-Cone Sum Rules Analysis of $Ξ_{QQ^{\prime}}\toΣ_{Q^{\prime}}$ Weak Decays. https://doi.org/10.1140/epjc%2Fs10052-020-7635-1

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