Weak decays of triply heavy baryons in light front approach

Abstract

We analyze weak decays of triply heavy baryon ${\Omega }_{ccc}^{++}$ and calculate the form factors for ${\Omega }_{ccc}^{++}\to {\Xi }_{cc}^{++}/{\Omega }_{cc}^{+}$ transitions in a light front quark model. The momentum distributions in form factors are accessed via the pole-model parametrization. Using the results for form factors, we predict decay branching fractions for semi-leptonic decays, and obtain $\mathcal{B}({\Omega }_{ccc}^{++}\to {\Xi }_{cc}^{+}{e}^{+}{\nu }_e)=0.08\%$, $\mathcal{B}({\Omega }_{ccc}^{++}\to {\Omega }_{cc}^{+}{e}^{+}{\nu }_e)=1.23\%$. Forward-backward asymmetry and angular distributions are then investigated in this work. We also estimate branching fractions for a few color-allowed processes and find that the ${\Omega }_{ccc}^{++}\to {\Omega }_{cc}^{+}{\pi }^{+}$ has a sizable branching fraction: $\mathcal{B}({\Omega }_{ccc}^{++}\to {\Omega }_{cc}^{+}{\pi }^{+})=1.82\%$. We point out that the ${\Omega }_{ccc}^{++}\to {\Omega }_{cc}^{+}{\pi }^{+}$ is a golden channel for the discovery of the ${\Omega }_{ccc}^{++}$. This analysis can provide a useful reference for future experimental search in future.

15 pages, 5 figures

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• Baryons in the light-front approach: The three-quark picture
• Anatomy of ${\Lambda }_c^{+}$ semileptonic decays
• Angular distribution of the FCNC process $B_c\to D_s^{\ast }(\to D_s\pi ){\ell }^{+}{\ell }^{-}$
• Investigating the transition form factors of ${\Lambda }_b\to {\Lambda }_c(2625)$ and ${\Xi }_b\to {\Xi }_c(2815)$ and the corresponding weak decays with support from baryon spectroscopy
• Light quark decays of doubly heavy baryons in light front approach
• Transition form factors and angular distributions of the ${\mathbf{\Lambda }}_{\mathbf{b}}\to \mathbf{\Lambda }(1520)(\to \mathbf{N}\bar{\mathbf{K}}){\mathbf{\ell }}^{+}{\mathbf{\ell }}^{-}$ decay supported by baryon spectroscopy
• Baryonic heavy-to-light form factors induced by tensor current in light-front approach
• Systematic analysis of the mass spectra of triply heavy baryons