Restudy of the color-allowed two-body nonleptonic decay of bottom baryons ${Ξ_b}$ and ${Ω_b}$ supported by hadron spectroscopy

Abstract

In this work, we calculate the branching ratios of the color-allowed two-body nonleptonic decays of the bottom baryons, which include the Ξ b → Ξ ( * ) c and Ω b → Ω ( * ) c weak transitions by emitting a pseudoscalar meson (π − , K − , D − , and D − s ) or a vector meson (ρ − , K * − , D * − , and D * − s ). For achieving this aim, we adopt the threebody light-front quark model with the support of hadron spectroscopy, where the spatial wave functions of these heavy baryons involved in these weak decays are obtained by a semirelativistic potential model associated with the Gaussian expansion method. Our results show that these decays with the π − , ρ − , and D ( * )− s -emitted mode have considerable widths, which could be accessible at the ongoing LHCb and Belle II experiments.