论文标题
预测狭窄的奇异的耐药状态，具有量子数$ j^{pc} = 0^{ - } $
Prediction of a narrow exotic hadronic state with quantum numbers $J^{PC}=0^{--}$
论文作者
论文摘要
在过去的二十年中，已经观察到许多类似炭的结构。他们中的大多数都有量子数，可以由一对魅力和抗夸克（Anticharm Quarks）形成，因此很难明确地识别其中的异国情调。在这封信中，通过利用重型夸克自旋对称性，我们提出了强大的预测，其中$ψ（4230），ψ（4360）$和$ψ（4415）$被标识为$ d \ bar d_1，bar d_1，d^*\ bar d_1 $ d_1 $和$ d^*$ d^*$ d^*$ d^*$ 2我们表明，带有量子数字的风味中性charmonium般的异国情调状态$ j^{pc} = 0^{ - } $，表示为$ψ_0（4360）$，应以$ d^*\ bar d_1 $绑定状态而存在。 $ψ_0（4360）$}的质量和宽度预计为$（4366 \ pm18）$ MEV和小于10 MEV。 $ψ_0（4360）$在两个方面很重要：到目前为止，已经观察到了$ 0^{ - } $强子，并且对该状态的研究将启发人们对4.2至4.5 GEV的神秘矢量媒介的理解，以及先前观察到的Exotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocotocot $ z_c $ and $ p_c $ $ p_c $。我们建议可以在$ e^+e^ - \ toηψ_0（4360）$中搜索这种异国情调的状态，并通过测量即将卸下的$η$ Meson的角度分布来唯一识别。
Lots of charmonium-like structures have been observed in the last two decades. Most of them have quantum numbers that can be formed by a pair of charm and anticharm quarks, thus it is difficult to unambiguously identify the exotic ones among them. In this Letter, by exploiting heavy quark spin symmetry, we present a robust prediction of the hadronic molecular scenario, where the $ψ(4230),ψ(4360)$ and $ψ(4415)$ are identified as $D\bar D_1,D^*\bar D_1$ and $D^*\bar D^*_2$ bound states, respectively. We show that a flavor-neutral charmonium-like exotic state with quantum numbers $J^{PC}=0^{--}$, denoted as $ψ_0(4360)$, should exist as a $D^*\bar D_1$ bound state. The mass and width of the $ψ_0(4360)$} are predicted to be $(4366\pm18)$ MeV and less than 10 MeV, respectively. The $ψ_0(4360)$ is significant in two folds: no $0^{--}$ hadron has been observed so far, and a study of this state will enlighten the understanding of the mysterious vector mesons between 4.2 and 4.5 GeV, as well as the nature of previously observed exotic $Z_c$ and $P_c$ states. We propose that such an exotic state can be searched for in $e^+e^-\to ηψ_0(4360)$ and uniquely identified by measuring the angular distribution of the outgoing $η$ meson.
