The weak decays of $Ξ^{(')}_{c}\toΞ$ in the light-front quark model
Without contamination from the final state interactions, the calculation of the branching ratios of semileptonic decays $Ξ^{(')}_{c}\toΞ+e^+ν_e$ may provide us more information about the inner structure of charmed baryons. Moreover, by studying those processes, one can better determine the form factors of $Ξ_c\toΞ$ which can be further applied to relevant estimates. In this work, we use the light-front quark model to carry out the computations where the three-body vertex functions for $Ξ_c$ and $Ξ$ are employed. To fit the new data of the Belle II, we re-adjust the model parameters and obtain $β_{s[sq]}=1.07$ GeV which is 2.9 times larger than $β_{s\bar s}=0.366$ GeV. This value may imply that the $ss$ pair in $Ξ$ constitutes a more compact subsystem. Furthermore, we also investigate the non-leptonic decays of $Ξ^{(')}_c\to Ξ$ which will be experimentally measured soon, so our model would be tested by consistency with the new data.