论文标题
Charmed $ω_c$弱衰减在轻夸克模型中的$ω$
Charmed $Ω_c$ weak decays into $Ω$ in the light-front quark model
论文作者
论文摘要
超过十$ω_c^0 $弱衰减模式的分支分数相对于$ω^0_c \toΩ^-π^+$。为了提取绝对分支分数，需要研究$ω^0_c \toΩ^-π^+$的研究。在这项工作中，我们预测$ {\ cal b}_π\ equiv {\ cal b}（ω__c^0 \toΩ^-π^+）=（5.1 \ pm 0.7）\ times 10^{ - 3} $，带有$ω__c^0 \ to^0 \ to^to^ - to^ - to^ - $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $。我们还预测$ {\ cal b}_ρ\ equiv {\ cal b}（ω__c^0 \toΩ^ - ρ^+）=（14.4 \ pm 0.4）\ times 10^{ - 3} $ and $ {\ cal b} b}（ω_c^0 \toΩ^-e^+ν_e）=（5.4 \ pm 0.2）\ times 10^{ - 3} $。 $ {\ cal b}_ρ/{\ cal b}_π$的先前值偏离了最新观察。但是，我们的$ {\ cal b}_ρ/{\ cal b}_π= 2.8 \ pm 0.4 $能够减轻偏差。此外，我们获得$ {\ cal b} _e/{\ cal b}_π= 1.1 \ pm 0.2 $，这与当前数据一致。
More than ten $Ω_c^0$ weak decay modes have been measured with the branching fractions relative to that of $Ω^0_c\toΩ^-π^+$. In order to extract the absolute branching fractions, the study of $Ω^0_c\toΩ^-π^+$ is needed. In this work, we predict ${\cal B}_π\equiv {\cal B}(Ω_c^0\toΩ^-π^+)=(5.1\pm 0.7)\times 10^{-3}$ with the $Ω_c^0\toΩ^-$ transition form factors calculated in the light-front quark model. We also predict ${\cal B}_ρ\equiv {\cal B}(Ω_c^0\toΩ^-ρ^+)=(14.4\pm 0.4)\times 10^{-3}$ and ${\cal B}_e\equiv{\cal B}(Ω_c^0\toΩ^-e^+ν_e)=(5.4\pm 0.2)\times 10^{-3}$. The previous values for ${\cal B}_ρ/{\cal B}_π$ have been found to deviate from the most recent observation. Nonetheless, our ${\cal B}_ρ/{\cal B}_π=2.8\pm 0.4$ is able to alleviate the deviation. Moreover, we obtain ${\cal B}_e/{\cal B}_π=1.1\pm 0.2$, which is consistent with the current data.
