论文标题
诱人的陷阱中的耦合通道效应
Coupled Channel Effects for the Charmed-Strange Mesons
论文作者
论文摘要
我们在耦合的通道框架中对$ d_s $系统的光谱和辐射衰减进行系统的计算，在该框架框架中，$^3p_0 $型号引起了未取消的效果。在计算中，波函数是通过使用非依赖性潜在模型获得的，并通过高斯膨胀方法精确处理。即使拟合主要集中在光谱上，我们的模型仍与光谱和HADRONIC衰变的实验非常吻合，这表明耦合的通道效应可能会导致对$ D_S $ Mesons的合理且连贯的描述。基于计算，我们对激发态的各个方面进行了详细分析，尤其是$ d_s（2317），d_s（2460），d_s（2536），d_s（2860），d_s（3040）$。我们还预测，$ d_s（2 {}^3p_0）$应该是$ d^*k^*$主分子，质量为$ 2894 $ 〜MEV，仅$ 5 $ 〜MEV低于$ d^*k^*$ threshold。
We make a systematic calculation of the spectra and hadronic decays of the $D_s$ system in a coupled channel framework, where the unquenched effects are induced by the $^3P_0$ model. In the calculation, the wave functions are obtained by using a nonrelativistic potential model and are handled precisely with Gaussian Expansion Method. Even though the fitting mainly focuses on the spectrum, our model agrees well with the experiments on both the spectra and the hadronic decays, suggesting that the coupled channel effect could result in a reasonable and coherent description of the $D_s$ mesons. Based on the calculation, we give a detailed analysis on various aspects of the excited states, especially $D_s(2317), D_s(2460), D_s(2536), D_s(2860), D_s(3040)$. We also predict that $D_s(2{}^3P_0)$ should be a $D^*K^*$ dominant molecule with mass $2894$~MeV, which is only $5$~MeV below the $D^*K^*$ threshold.
