论文标题
在强烈相互作用的介质中完全重量的四夸克
Fully-heavy tetraquarks in strongly interacting medium
论文作者
论文摘要
我们研究了有限温度下完全重型的四夸克人的性质及其在高能核碰撞中的产生。我们通过在真空中求解四体Schrödinger方程和强烈相互作用的物质，从而获得异国强生状态的质量和波函数$ cc \ bar c \ bb c $ c \ bar c $和$ bb \ bar b \ bar b $。在真空中，tetraquarks高于相应的梅森 - 梅森质量阈值，而新观察到的异国情调状态$ x（6900）$可能是$ cc \ bar c \ bar c \ bar c $ statum cun c $ statum cun co $ j^{pc} = 0^{++} $或$ 1^{+1^{+ - + - } $。在热培养基中，计算了四夸克质量和解离温度的温度依赖性。在有限温度下采用波功能，我们为四夸克状态构建Wigner函数，并通过合并机制，在LHC Energy的重离子碰撞中计算出$ CC \ bar c \ bar c $的横向动量分布。与核子核子碰撞相比，每二元碰撞的产率显着提高。
We study the properties of fully-heavy tetraquarks at finite temperature and their production in high-energy nuclear collisions. We obtain the masses and wave functions of the exotic hadron states $cc\bar c\bar c$ and $bb\bar b\bar b$ by solving the four-body Schrödinger equation in vacuum and strongly interacting matter. In vacuum, the tetraquarks are above the corresponding meson-meson mass threshold, and the newly observed exotic state $X(6900)$ might be a $cc\bar c\bar c$ state with quantum number $J^{PC}=0^{++}$ or $1^{+-}$. In hot medium, the temperature dependence of the tetraquark masses and the dissociation temperatures are calculated. Taking the wave function at finite temperature, we construct the Wigner function for the tetraquark states and calculate, with coalescence mechanism, the production yield and transverse momentum distribution of $cc\bar c\bar c$ in heavy-ion collisions at LHC energy. In comparison with nucleon-nucleon collisions, the yield per binary collision is significantly enhanced.
