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

TL;DR

This paper recalculates the branching ratios of specific bottom baryon decays using a light-front quark model supported by hadron spectroscopy, predicting observable decay widths at current experiments.

Contribution

It introduces a detailed calculation of bottom baryon decay branching ratios using a three-body light-front quark model with hadron spectroscopy support, providing new theoretical predictions.

Findings

Decays with $ ho^-$, $ ho^-$, and $D_s^{(*)-}$ emissions have sizable widths.

Results suggest these decays are detectable at LHCb and Belle II.

The model effectively links hadron spectroscopy with decay predictions.

Abstract

In this work, we calculate the branching ratios of the color-allowed two-body nonleptonic decays of the bottom baryons, which include the $\Xi_b\to \Xi_c^{(*)}$ and $\Omega_b\to \Omega_c^{(*)}$ weak transitions by emitting a pseudoscalar meson ($\pi^{-}$, $K^{-}$, $D^{-}$, and $D_s^{-}$) or a vector meson ($\rho^{-}$, $K^{*-}$, $D^{*-}$, and $D_s^{*-}$). For achieving this aim, we adopt the three-body 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 $\pi^-$, $\rho^-$, and $D_s^{(*)-}$-emitted mode have considerable widths, which could be accessible at the ongoing LHCb and Belle II experiments.