论文标题
超遗嘱性碰撞中激发Quarkonia的独家光生启动
Exclusive photoproduction of excited quarkonia in ultraperipheral collisions
论文作者
论文摘要
在本文中，我们讨论了$ψ（1s，2s）$和$υ（1s，2s）$的地面和激发态的独家光生产。使用潜在模型来获得矢量介子波函数，我们发现了与LHC和HERA Colliders的数据良好的一致性，其中$ j/ψ（1s，2s）$和$υ（1s）$ in $γp$ collisions。我们将计算扩展到核目标案例，并使用拟合到数据的阴影和有限的相干长度效应，将其应用于$ aa $ upcs。将我们的结果与最近的LHC数据进行了比较，其中包括不一致的（$ j/ψ（1s）$在2.76 TEV）和连贯的（$ j/ψ（1s）$ 2.76和5.02 TEV）过程。我们还展示了激发态的相应预测，希望将来的测量结果可以提供有关矢量中膜波函数和核效应的更详细信息。
In this paper, we discuss the exclusive photoproduction of ground and excited states of $ψ(1S,2S)$ and $Υ(1S,2S)$ in ultraperipheral collisions (UPCs). Using the potential model in order to obtain the vector meson wave function, we find a good agreement of our calculations with data from the LHC and HERA colliders for $J/ψ(1S,2S) $ and $Υ(1S)$ in $γp$ collisions. We extend the calculations to the nuclear target case applying them to $AA$ UPCs with the use of the shadowing and finite coherence length effects fitted to the data. Our results are compared to the recent LHC data, in both incoherent ($J/Ψ(1S)$ at 2.76 TeV) and coherent ($J/Ψ(1S)$ at 2.76 and 5.02 TeV) processes. We also show the corresponding predictions for the excited states, in the hope that future measurements could provide more detailed information about the vector meson wave functions and nuclear effects.
