arXiv 2011.024162020-11hep-ph

热介质中四夸克态$D^*_{s0}(2317)$性质的修正

Modifications on the Properties of $D^*_{s0}(2317)$ as Four-quark State in Thermal Medium

A. Türkan, J. Y. Süngü, E. Veli Veliev

备注：: 9 pages, 7 figures

摘要：

由于$D^*_{s0}(2317)$的低质量仍然是传统夸克模型的一个问题，人们可以考虑其他的选择作为多夸克系统。因此，我们采用热QCD求和规则（TQCDSR）方法，利用两点关联函数和六维非微扰凝聚的贡献，研究了标量开粲态$D^*_{s0}(2317)$.推导并数值分析了热质量和极点留数和规则对热介质中$D^*_{s0}(2317)$共振特性的影响。我们的数值计算表明，在质量和极残留值的变化是稳定的，通过生长温度高达$T\cong100~\mathrm{MeV}$，但他们开始下降后，这一点。在临界温度下，质量和极残基的值在分子情况下变为真空中的$91\%, 70\% $，在双夸克-反双夸克情况下变为$ 91\%, 69\% $。我们的结果并没有给出任何明确的信息，无论是$D^*_{s0}(2317)$共振分子或双夸克-反双夸克结构，因为他们非常接近彼此区分。此外，我们还预测了分子和双夸克-反双夸克图象中$D^*_{s0}(2317)$共振底伴的强子参数。这种束缚态值得在未来的实验中研究。此外，热介质效应对开粲介子$D^*_{s0}(2317)$和底伙伴强子参数的影响对定义重离子碰撞实验中的QCD相图也有一定的意义.这些结果还可用于区分传统夸克模型介子和奇异介子。

英文摘要：

Since the low mass of $D^*_{s0}(2317)$ has still been a problem to the conventional quark model, one can consider other options regarding as multi-quark system. Therefore we investigate the scalar open-charm state $D^*_{s0}(2317)$ by Thermal QCD Sum Rules (TQCDSR) method using the two-point correlation function together with contributions of the non-perturbative condensates up to dimension six. Deriving and numerically analyzing thermal mass and pole residue sum rules, we accomplish the effects on the properties of $D^*_{s0}(2317)$ resonance in hot medium. Our numerical evaluations indicate that the variations in mass and pole residue values are stable through the growing temperature up to $T\cong100~\mathrm{MeV}$, but they begin to fall after this point. At critical temperature, the values of mass and pole residue change up to $91\%, 70\% $ of their values in vacuum in the molecular scenario and $ 91\%, 69\% $ in the diquark-antidiquark scenario. Our results does not give any definite information as to whether $D^*_{s0}(2317)$ resonance has molecular or diquark-antidiquark structure since they are very close to each other to differentiate them. Besides, we predict the hadronic parameters of the bottom partner of the $D^*_{s0}(2317)$ resonance in both molecular and diquark-antidiquark pictures. This bound state is worth investigating in future experiments. Also the detailed search of hot medium effects on the hadronic parameters of open-charm meson $D^*_{s0}(2317)$ and the bottom partner could have some implications to define the QCD phase diagram obtained from heavy-ion collision experiments. Moreover these results can be useful in distinguishing conventional quark model mesons from exotica.

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。

摘要：

英文摘要：

相关论文