论文标题
$ d^*_ {s0}（2317）$和$ d_ {s1}（2460）$ in $ b $衰减为$ d^{（*）k $和$ d^{（*）_sη$ molecules
Production of $D^*_{s0}(2317)$ and $D_{s1}(2460)$ in $B$ decays as $D^{(*)}K$ and $D^{(*)}_sη$ molecules
论文作者
论文摘要
$ d_ {s0}^{\ ast}（2317）$和$ d_ {s1}（2460）$的分子性质已从其群众，衰减属性和生产速率的角度进行了广泛的研究。在这项工作中，我们研究了$ b \ to \ bar {d}^{（\ ast）} d_ {s0}^{*}（2317）$和$ b \ to \ bar {d}^{（\ ast）} d_ {s1}（2460） $ \ bar {d}^{（\ ast）} d_ {s}^{（\ ast）} $和$ j/ψk$（$η_{c} k $），然后是$ d_ {s0}^{s0}^{\ ast}（2317）$ and $ d_ by d _ pernation naty nes pernation n pernation n of and vention n pernation in n pernation in n pernation in n ofantion in n ofantion in n oftery nes nes nes nes of and nes of nes nesectrate（2460）（2460）（2460）（ $ d_ {s}^{（\ ast）}η$和$ d^{（\ ast）} k $通过$η$和$ d^{（\ ast）} $ mesons的交换。获得的Br $ [B \ to \ bar {d}^{（\ ast）} d_ {s0}^{*}（2317）] $的绝对分支分支与实验数据达成合理的一致小于实验中心值几乎要比两到三倍。我们暂时将这种差异归因于本工作中缺少的反应机制，或者可能存在$ d_ {s1}（2460）$ wave函数中相对较大的$ c \ bar {s} $组件。
The molecular nature of $D_{s0}^{\ast}(2317)$ and $D_{s1}(2460)$ have been extensively studied from the perspective of their masses, decay properties, and production rates. In this work, we study the weak decays of $B \to \bar{D}^{(\ast)}D_{s0}^{*}(2317)$ and $B \to \bar{D}^{(\ast)}D_{s1}(2460)$ by invoking triangle diagrams where the $B$ meson first decays weakly into $\bar{D}^{(\ast)}D_{s}^{(\ast)}$ and $J/ψK$($η_{c}K$), and then the $D_{s0}^{\ast}(2317)$ and $D_{s1}(2460)$ are dynamically generated by the final-state interactions of $D_{s}^{(\ast)}η$ and $D^{(\ast)}K$ via exchanges of $η$ and $D^{(\ast)}$ mesons. The obtained absolute branching fractions of Br$[B \to \bar{D}^{(\ast)}D_{s0}^{*}(2317)]$ are in reasonable agreement with the experimental data, while the branching fractions of Br$[B \to \bar{D}^{(\ast)}D_{s1}(2460)]$ are smaller than the experimental central values by almost a factor of two to three. We tentatively attribute such a discrepancy to either reaction mechanisms missing in the present work or the likely existence of a relatively larger $c\bar{s}$ component in the $D_{s1}(2460)$ wave function.
