Hidden-charm pentaquark states in heavy ion collisions at energies available at the CERN Large Hadron Collider
Hidden-charm pentaquark states in heavy ion collisions at energies available at the CERN Large Hadron Collider
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欧洲核子研究中心大型强子对撞机可用能量下重离子碰撞中的隐藏魅力五夸克态
DOI：
10.1103/physrevc.94.044913
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发表时间：
2016
影响因子：
3.1
通讯作者：
Shao Feng-Lan
中科院分区：
文献类型：
--
作者：
Wang Rui-Qin;Song Jun;Sun Kai-Jia;Chen Lie-Wen;Li Gang;Shao Feng-Lan
在夸克组合的框架下，推导了超相对论重离子碰撞中隐藏魅力五夸克态的产额公式，并研究了它们的产额比。我们提出了一些有趣的产额比，它们清楚地展示了不同隐藏魅力五夸克态之间的产生关系。我们展示了如何在重现正常强子的产额和谱的基础上，利用一个特定的夸克组合模型来估算和预测奇异的五夸克态的横动量(T)谱和横动量({P}_c}^{+}(4380)，{P}_c}^{+}(4450))，并以中心的铅+铅碰撞为例进行计算。
In the framework of the quark combination, we derive the yield formulas and study the yield ratios of hidden-charm pentaquark states in ultrarelativistic heavy ion collisions. We propose some interesting yield ratios which clearly exhibit the production relationships between different hidden-charm pentaquark states. We show how to employ a specific quark combination model to evaluate the yields and predict the transverse momentum (${p}_{T}$) spectra of exotic ${P}_{c}^{+}(4380), {P}_{c}^{+}(4450)$, and their partners as pentaquark states on the basis of reproducing the yields and ${p}_{T}$ spectra of normal identified hadrons and execute the calculations in central Pb + Pb collisions at $\sqrt{{s}_{NN}}=2.76$ TeV as an example.