Charmed \(\Omega_c\) weak decays into \(\Omega\) in the light-front quark model

• Published in: arXiv.org
• Main Authors: Yu-Kuo, Hsiao, Yang, Ling, Chong-Chung, Lih, Tsai, Shang-Yuu
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 23.11.2020
• Subjects: Charm (particle physics); Form factors; Quark models; Quarks
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2009.12752

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