论文标题
生产$ψ（4040）$，$ψ（4160）$和$ψ（4415）$ Meson
Production of $ψ(4040)$, $ψ(4160)$, and $ψ(4415)$ mesons in hadronic matter
论文作者
论文摘要
我们介绍了$ψ（4040）$，$ψ（4160）$和$ψ（4415）$介子的首次生产研究。两个相撞的魅力介子之间的夸克互换导致三个介子的生产。我们计算反应的非极化横截面，$ d \ bar {d} \ toρr$，$ d \ bar {d}^* \ toπr$，$ d \ bar {d}^* \ toρr$，$ d $，$ d^*^* \ bar {d} $ d^* \ bar {d}^* \ toπr$，$ d^* \ bar {d}^* \ toρr$，其中$ r $ sand以$ψ（4040）$，$ψ（4160）$和$ψ（4160）$和$ψ（4415）$。在涵盖Hadronic物质的温度区域中，产生$ψ（4040）$的峰值横截面类似于或大于产生$ψ（4415）$的峰值截面，而后者通常大于生产$ψ（4160）$的峰值。在横截面的情况下，我们建立了$ψ（4040）$，$ψ（4160）$和$ψ（4415）$的新的总费用方程。在$ \ sqrt {s_ {nn}} = 5.02 $ tev的中央pb-pb碰撞方程式求解。方程式的解决方案表明，在动力学冻结的$ψ（4040）$数量密度大于$ψ（4415）$数量密度，该密度大于$ψ（4160）$数量密度。
We present the first study of production of $ψ(4040)$, $ψ(4160)$, and $ψ(4415)$ mesons in hadronic matter. Quark interchange between two colliding charmed mesons leads to the production of the three mesons. We calculate unpolarized cross sections for the reactions, $D\bar{D} \to ρR$, $D\bar{D}^* \to πR$, $D\bar{D}^* \to ρR$, $D^*\bar{D} \to πR$, $D^*\bar{D} \to ρR$, $D^*\bar{D}^* \to πR$, and $D^*\bar{D}^* \to ρR$, where $R$ stands for $ψ(4040)$, $ψ(4160)$, and $ψ(4415)$. In the temperature region covering hadronic matter the peak cross sections of producing $ψ(4040)$ are similar to or larger than the ones of producing $ψ(4415)$, and the latter are generally larger than those of producing $ψ(4160)$. With the cross sections we establish new master rate equations for $ψ(4040)$, $ψ(4160)$, and $ψ(4415)$. The equations are solved for central Pb-Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV at the Large Hadron Collider. Solutions of the equations show that the $ψ(4040)$ number density at kinetic freeze-out of hadronic matter is larger than the $ψ(4415)$ number density which is larger than the $ψ(4160)$ number density.
