标题： 介子衰变的$D_{sj}(2317)$、$D_{sj}(2460)$和$B_{sj}(5718)$，$B_{sj}(5765)$ 显示英文标题

标题： Pionic Decays of $D_{sj}(2317)$, $D_{sj}(2460)$ and $B_{sj}(5718)$, $B_{sj}(5765)$

摘要： 我们使用$^3P_0$模型估计窄的魅-奇共振态$D_{sj}(2317)$和$D_{sj}(2460)$的介子衰变宽度。它们的单介子衰变通过$\eta$-$\pi^0$混合发生，而$D_{sj}(2460)$的双介子衰变则通过虚拟的$f_0(980)$介子发生。 混合 $^3P_1$ 和 $^1P_1$ 状态增强了 $D_{sj}(2460)$ 的单π介子衰变宽度，并显著抑制了其双π介子衰变宽度。 $D_{sj}(2460)$ 的双π介子衰变宽度远小于其单π介子衰变宽度。 作为副产品，我们还计算了 $B_{sj}(5765)$、 $B_{sj}(5765)$ 介子在 $(0^+, 1^+)$ 重双重态中的介子衰变宽度。 显示英文摘要

摘要： We estimate pionic decay widths of the narrow charm-strange resonances $D_{sj}(2317)$ and $D_{sj}(2460)$ using the $^3P_0$ model. Their one-pion decays occur through $\eta$-$\pi^0$ mixing while the two-pion decays of $D_{sj}(2460)$ occur through the virtual $f_0(980)$ meson. The mixing between $^3P_1$ and $^1P_1$ states enhances the single pion decay width of $D_{sj}(2460)$ and suppresses its double pion decay width significantly. The two-pion decay width of $D_{sj}(2460)$ is much smaller than its one-pion decay width. As a byproduct, we also calculate pionic decay widths of $B_{sj}(5765)$, $B_{sj}(5765)$ mesons in the $(0^+, 1^+)$ heavy doublet.