AI 中文总结
本研究通过有效拉格朗日方法计算D_{s1}(2700)的强衰变宽度，结合实验约束验证其作为P波DK*分子态的解释，预测的衰变宽度与实验吻合，且D_s*η道的结果与传统夸克模型预言有显著差异。
AI 中文摘要
本工作通过系统研究D_{s1}(2700)的强衰变性质，探究将其解释为P波DK*强子分子态的可能性。采用有效拉格朗日方法，计算D_{s1}(2700)到两体末态DK、D*K、D_sη、D_s*η以及三体DπK道的强衰变宽度。利用已有的实验测量值R_{D_{s1}} = Γ(D_{s1}(2700)→D*K)/Γ(D_{s1}(2700)→DK)=0.91±0.13±0.12，约束D_{s1}(2700)与其组分DK*的耦合强度。基于该耦合强度可直接得到总衰变宽度，其结果与实验测量值吻合良好，为将D_{s1}(2700)解释为P波DK*分子态提供了有力支持。实验上尚未观测到的D_{s1}(2700)→D_s*η衰变道可进一步检验该解释，因为其预测的较大衰变宽度与传统夸克模型的预言存在显著差异。
英文摘要
In this work, we investigate the possibility of interpreting the $D_{s1}(2700)$ as a $P$-wave $DK^{*}$ hadronic molecular state through a systematic study of its strong decay properties. Using the effective Lagrangian approach, we calculate the strong decay widths of the $D_{s1}(2700)$ into the two-body final states $DK$, $D^{*}K$, $D_sη$, and $D_s^{*}η$, as well as the three-body $DπK$ channel. The coupling of the $D_{s1}(2700)$ to its constituents, $DK^{*}$, is constrained by the available experimental measurement of $R_{D_{s1}} =Γ(D_{s1}(2700) \to D^{*}K)/Γ(D_{s1}(2700)\to DK)=0.91\pm0.13\pm0.12$. With the resulting coupling, the total decay width can be readily obtained and is found to be in good agreement with the experimental measurement, providing strong support for interpreting the $D_{s1}(2700)$ as a $P$-wave $DK^{*}$ molecular state. The experimentally unobserved $D_{s1}(2700)\to D_s^{*}η$ decay channel provides a further test of this interpretation, as its predicted sizable decay width differs significantly from the conventional quark model prediction.
