论文标题
$ z_c（3900）$ tetraquark的属性
Properties of $Z_c(3900)$ tetraquark in a cold nuclear matter
论文作者
论文摘要
对核物质中嵌入颗粒粒子性质的介质影响的研究对于理解性质和内部夸克 - 格鲁隆组织以及对量子数，尤其是外来状态的量子数的精确确定至关重要。在这种情况下，我们研究了一个著名的炭子状态之一，即$ z_c（3900）$，在冷浓密的物质上。我们通过中等总和规则调查了$ z_c（3900）$状态的质量和当前梅森耦合的可能变化，这是由于饱和密度的密集介质，$ρ^{sat} $。我们还估计了该状态在饱和核物质密度下的载体自我能源。我们讨论了该状态的光谱参数相对于密度到对应于中子恒星核心的高密度的行为，$ρ\约5ρ^{sat} $。该状态的质量和电流耦合都显示出非线性行为和相对于介质密度的减小：质量在$ρ=5ρ^{sat} $时达到其真空值的$ 30 \％$ $，而当前耦合方法则在$ρ\ 〜2.1p.1p.1p.1p.1p.1p.1p.1p^{sat} $中使用中心值和其他中心值的零。
The study of medium effects on properties of particles embedded in nuclear matter is of great importance for understanding the nature and internal quark-gluon organization as well as exact determination of the quantum numbers, especially of the exotic states. In this context, we study the physical properties of one of the famous charmonium-like states, $Z_c(3900)$, in a cold dense matter. We investigate the possible shifts in the mass and current-meson coupling of the $Z_c(3900)$ state due to the dense medium at saturation density, $ ρ^{sat} $, by means of the in-medium sum rules. We also estimate the vector self-energy of this state at saturation nuclear matter density. We discuss the behavior of the spectroscopic parameters of this state with respect to the density up to a high density corresponding to the core of neutron stars, $ρ\approx 5ρ^{sat}$. Both the mass and current-coupling of this state show nonlinear behavior and decrease with respect to the density of the medium: the mass reaches roughly $30\%$ of its vacuum value at $ ρ=5ρ^{sat} $, while the current-coupling approaches zero at $ ρ\approx2.1ρ^{sat} $, when the central values of the auxiliary and other input parameters are used.
