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arXiv · 1704.02688

Hadronic decay properties of newly observed $Ω_c$ baryons

Ze Zhao·Dan-Dan Ye·Ailin Zhang
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Abstract

Hadronic decay widths of the newly observed charmed strange baryons, $Ω_c(3000)^0$, $Ω_c(3050)^0$, $Ω_c(3066)^0$, $Ω_c(3090)^0$ and $Ω_c(3119)^0$ have been calculated in a $^3P_0$ model. Our results indicate that $Ω_c(3066)^0$ and $Ω_c(3090)^0$ can be interpreted as the $1P-$wave $Ω_{c2}(\frac{3}{2}^-)$ or $Ω_{c2}(\frac{5}{2}^-)$. Though the measured masses of $Ω_c(3000)^0$, $Ω_c(3050)^0$ and $Ω_c(3119)^0$ are lower than existed theoretical predictions of $1D-$wave $Ω_c$, the hadronic decay features of these $Ω_c$ favor assignments of the $1D-$wave states. $Ω_c(3000)^0$ is possibly $Ω_{c1}(\frac{1}{2}^+)$ or $Ω_{c1}(\frac{3}{2}^+)$, $Ω_c(3050)^0$ is possibly $\hatΩ_{c3}(\frac{5}{2}^+)$ or $\hatΩ_{c3}(\frac{7}{2}^+)$, and $Ω_c(3119)^0$ is possibly $\hatΩ_{c3}(\frac{5}{2}^+)$, $\hatΩ_{c3}(\frac{7}{2}^+)$, $Ω_{c3}(\frac{5}{2}^+)$ or $Ω_{c3}(\frac{7}{2}^+)$. The predicted total decay widths in these assignments are consistent with experiment.

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Ze Zhao, Dan-Dan Ye, Ailin Zhang. 2017-04-10. Hadronic decay properties of newly observed $Ω_c$ baryons. https://doi.org/10.1103/physrevd.95.114024

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