AI 中文总结
本研究假设存在S波$D^{*}K$和$\bar{D}^{*}K$分子，采用有效拉格朗日方法研究其强衰变，发现不同同位旋态的宽度差异，为实验寻找这类分子候选态提供线索。
AI 中文摘要
受$D^{(*)}K^{(*)}/\bar{D}^{(*)}K^{(*)}$阈值附近丰富结构谱的启发，我们假设存在S波$D^{*}K$和$\bar{D}^{*}K$分子，分别记为同位旋$I=0$的$T_{c\bar{s}1}^{f}(2460)$（对应$D_{s1}(2460)$）、$I=1$的$T_{c\bar{s}1}^{a}(2470)$、$I=0$的$T_{\bar{c}\bar{s}1}^{f}(2460)$、$I=1$的$T_{\bar{c}\bar{s}1}^{a}(2470)$。采用有效拉格朗日方法，我们研究这些分子态的强衰变，估算显示$T_{c\bar{s}1}^{a}(2470)$的宽度约为$T_{c\bar{s}1}^{f}(2460)$的三个数量级，而$T_{\bar{c}\bar{s}1}^{a/f}(2470)$的宽度与$T_{c\bar{s}1}^{f}(2460)$处于同一量级，本研究可为实验寻找这些分子候选态提供重要线索。
英文摘要
Inspired by the rich spectrum of structures near the $D^{(*)}K^{(*)}/\bar{D}^{(*)}K^{(*)}$ thresholds, we postulate the existence of $S$-wave $D^{*}K$ and $\bar{D}^{*}K$ molecules, denoted as $T_{c\bar{s}1}^{f}(2460)$ with $I=0$ (corresponding to $D_{s1}(2460)$), $T_{c\bar{s}1}^{a}(2470)$ with $I=1$, $T_{\bar{c}\bar{s}1}^{f}(2460)$ with $I=0$, and $T_{\bar{c}\bar{s}1}^{a}(2470)$ with $I=1$, respectively. Using an effective Lagrangian approach, we investigate the strong decays of these molecular states. Our estimates indicate that the width of $T_{c\bar{s}1}^{a}(2470)$ is roughly three orders of magnitude larger than that of $T_{c\bar{s}1}^{f}(2460)$, while the widths of $T_{\bar{c}\bar{s}1}^{a/f}(2470)$ are of the same orders as that of $T_{c\bar{s}1}^{f}(2460)$. The present study may provide valuable clues for the experimental search for these molecular candidates.
Comments9 pages, 8 figures
