Charmed ${\Omega }_c$ weak decays into $\Omega$ in the light-front quark model

Abstract

More than ten ${\Omega }_c^0$ weak decay modes have been measured with the branching fractions relative to that of ${\Omega }_c^0\to {\Omega }^{-}{\pi }^{+}$. In order to extract the absolute branching fractions, the study of ${\Omega }_c^0\to {\Omega }^{-}{\pi }^{+}$ is needed. In this work, we predict ${\mathcal{B}}_{\pi }\equiv \mathcal{B}({\Omega }_c^0\to {\Omega }^{-}{\pi }^{+})=(5.1\pm 0.7)\times 10^{-3}$ with the ${\Omega }_c^0\to {\Omega }^{-}$ transition form factors calculated in the light-front quark model. We also predict ${\mathcal{B}}_{\rho }\equiv \mathcal{B}({\Omega }_c^0\to {\Omega }^{-}{\rho }^{+})=(14.4\pm 0.4)\times 10^{-3}$ and ${\mathcal{B}}_e\equiv \mathcal{B}({\Omega }_c^0\to {\Omega }^{-}{e}^{+}{\nu }_e)=(5.4\pm 0.2)\times 10^{-3}$. The previous values for ${\mathcal{B}}_{\rho }/{\mathcal{B}}_{\pi }$ have been found to deviate from the most recent observation. Nonetheless, our ${\mathcal{B}}_{\rho }/{\mathcal{B}}_{\pi }=2.8\pm 0.4$ is able to alleviate the deviation. Moreover, we obtain ${\mathcal{B}}_e/{\mathcal{B}}_{\pi }=1.1\pm 0.2$, which is consistent with the current data.

12 pages, 2 figures

References in corpus (4)

• Non-leptonic two-body weak decays of ${\Lambda }_c(2286)$
• Two-body hadronic weak decays of antitriplet charmed baryons
• Semileptonic Decays of Heavy Omega Baryons in a Quark Model
• Axial-Vector Emitting Weak Nonleptonic Deacys of ${\Omega }_c^0$ Baryon

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