论文标题
$ d_ {s0}^*（2317）$和$ d_ {s1}（2460）$的分子性质的理论调查以及观察$ d \ bar {d} k $ bund state $ k_ {
Theoretical investigation of the molecular nature of $D_{s0}^*(2317)$ and $D_{s1}(2460)$ and the possibility of observing the $D\bar{D}K$ bound state $K_{c\bar{c}}(4180)$ in inclusive $e^+e^-\to c\bar{c}$ collisions
论文作者
论文摘要
寻找异国情调的多Quark状态并阐明其性质仍然是理解量子染色体动力学的核心主题 - 强烈相互作用的基本理论。研究最多的两个状态是魅力 - 震撼状态$ d_ {s0}^*（2317）$和$ d_ {s1}（2460）$。在这封信中，我们首次表明它们的及时产量以$ e^+e^ - \ \ to c \ bar {c} $碰撞附近，附近$ \ sqrt {s} = 10.6 $ gev，由babar协作测量，$ y（$ y（d_ {s0}^（2317）$ y和$ y（246）d _（s0}^（s0}^（246）） $ r = y（d_ {s0}^*（2317））/y（d_ {s1}（2460））$，可以在分子图片中得到很好的解释，这提供了对其性质的高度非平地验证，即$ dk/d^*k $分子。相反，将它们视为纯$ c \ bar {s} $ $ p-$ wave状态，统计模型预测了比unity的比率$ r $小，而实验中心价值相反，尽管它同意其相对较大的不确定性。此外，我们预测$ d \ bar {d} k $三体绑定状态的产量，$ k_ {c \ bar {c}}（4180）$，in $ e^+e^ - \ to c \ bar {c} $碰撞，并发现它在正在进行的Belle II实验范围内。本研究证明了一种新的方法可以揭示外来had子的性质以及在这方面的电子峰碰撞的潜力的可行性。
Searching for exotic multiquark states and elucidating their nature remains a central topic in understanding quantum chromodynamics--the underlying theory of the strong interaction. Two of the most studied such states are the charm-strange states $D_{s0}^*(2317)$ and $D_{s1}(2460)$. In this letter, we show for the first time that their prompt production yields in inclusive $e^+e^-\to c\bar{c}$ collisions near $\sqrt{s}=10.6$ GeV measured by the BABAR Collaboration, $Y(D_{s0}^*(2317))$ and $Y(D_{s1}(2460))$, in particular the ratio $R=Y(D_{s0}^*(2317))/Y(D_{s1}(2460))$, can be well explained in the molecular picture, which provide a highly nontrivial verification of their nature being $DK/D^*K$ molecules. On the contrary, treating them as pure $c\bar{s}$ $P-$wave states, the statistical model predicts a ratio $R$ smaller than unity, in contrast with the experimental central value, though in agreement with it considering its relatively large uncertainty. In addition, we predict the production yield of the $D\bar{D}K$ three-body bound state, $K_{c\bar{c}}(4180)$, in $e^+e^-\to c\bar{c}$ collisions and find that it is within the reach of the ongoing Belle II experiment. The present study demonstrates the feasibility of a novel method to unravel the nature of exotic hadrons and the potential of electron-positron collisions in this regard.
