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通过在质子靶上的K介子诱导反应产生$D_{s0}(2317)$和$D_{s1}(2460)$

Production of the $D_{s0}(2317)$ and $D_{s1}(2460)$ by kaon-induced reactions on a proton target

HongQiang Zhu, Yin Huang

发表信息：
Phys. Rev. D 100, 054031 (2019)
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摘要：

本文研究了用有效拉格朗日方法研究K介子与质子靶反应的粲奇异介子$D_{s0}(2317)$和$D_{s1}(2460)$的可能性。生产过程分别通过$t$通道$D^{0}$和$D^{*0}$交换来描述。我们的理论方法是基于手性酉理论的$D_{s0}(2317)$和$D_{s1}(2460)$共振是动态产生的。在从手征么正理论获得的$D_{s0}(2317)$至$KD$和$D_{s1}(2460)$至$KD^{*}$通道的耦合常数内，评估了$K^{-}p\to{}Λ_cD_{s0}(2317)$和$K^{-}p\to{}Λ_cD_{s1}(2460)$的总截面和微分截面。还包括由Pomeron和Reggeon交换介导的$\bar{K}p$初始状态相互作用，其减小了$D_{s0}(2317)$和$D_{s1}(2460)$的产生横截面。如果在未来的实验中测量，预测的总截面和角分布的具体特征可用于测试$D_{s0}(2317)$和$D_{s1}(2460)$的（分子）性质。

英文摘要：

We investigate the possibility to study the charmed-strange mesons $D_{s0}(2317)$ and $D_{s1}(2460)$ by kaon-induced reactions on a proton target in an effective Lagrangian approach. The production process is described by the $t$-channel $D^{0}$ and $D^{*0}$ exchanges, respectively. Our theoretical approach is based on the chiral unitary theory where the $D_{s0}(2317)$ and $D_{s1}(2460)$ resonances are dynamically generated. Within the coupling constants of the $D_{s0}(2317)$ to $KD$ and $D_{s1}(2460)$ to $KD^{*}$ channels obtained from the chiral unitary theory, the total and differential cross sections of the $K^{-}p\to{}Λ_cD_{s0}(2317)$ and $K^{-}p\to{}Λ_cD_{s1}(2460)$ are evaluated. The $\bar{K}p$ initial state interaction mediated by Pomeron and Reggeon exchanges is also included, which reduces the production cross sections of the $D_{s0}(2317)$ and $D_{s1}(2460)$. If measured in future experiments, the predicted total cross sections and specific features of the angular distributions can be used to test the (molecular) nature of the $D_{s0}(2317)$ and $D_{s1}(2460)$.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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