Heavy-Flavor-Conserving Hadronic Weak Decays of Charmed and Bottom Baryons: an Update

This paper serves as an update of the previous work entitled ``Heavy-Flavor-Conserving Hadronic Weak Decays Charmed and Bottom Baryons". We make improvement on bag wave functions by removing center-of-mass motion bag. All baryon matrix elements are now calculated under same framework without introducing new parameters. The 4-quark operators found to be nearly twice larger than ones. branching fractions $ \Xi_c ^0 \to \Lambda_c ^+\pi^-$ $\Xi_b^- \Lambda^0_b \pi^-$ both in agreement with current experimental results. For yet-to-be-measured heavy-flavor-conserving decays, we find ${\cal B}( ^+ ^+\pi^0) = (13.8 \pm 1.4)\times 10^{-3}$, \Xi_b^0 \pi^0) (2.6 0.3)\times \Omega_c \Xi_c^+\pi^-) (2.0 0.2)\times 10^{-3}$ \Xi_c^0\pi^0)= (1.1 0.1)\times 10^{-3}$. They all accessible LHCb, Belle II can tested near future.