论文标题
光核$ \ MATHBF {\ MATHRM {J/}ψ} $生产在LHC：基于质子的核偶极子散射振幅
Photonuclear $\mathbf{\mathrm{J/}ψ}$ production at the LHC: proton-based versus nuclear dipole scattering amplitudes
论文作者
论文摘要
LHC处的$ \ mathrm {j/}ψ$向量介子的相干光核生产已使用依赖性参数依赖的Balitsky-Kovchegov方程的两组解决方案进行了计算。核偶极散射幅度是从该过程的（$ i $）溶液中获得的质子靶标，以及与Glauber-Gribov处方相结合的质子靶标，或（$ II $），从代表原子核的初始条件获得的溶液中获得（$ ii $）。这些方法预测了不同的横截面，这些横截面与LHC的超外外碰撞的现有数据进行了比较。后一种方法似乎可以更好地描述当前的测量值。未来的LHC数据应该足够精确，以选择两种方法之一。
The coherent photonuclear production of a $\mathrm{J/}ψ$ vector meson at the LHC has been computed using two different sets of solutions of the impact-parameter dependent Balitsky-Kovchegov equation. The nuclear dipole scattering amplitudes are obtained either from ($i$) solutions for this process off proton targets coupled with a Glauber-Gribov prescription, or ($ii$) from solutions obtained with an initial condition representing the nucleus. These approaches predict different cross sections, which are compared with existing data from ultra-peripheral collisions at the LHC. The latter approach seems to better describe current measurements. Future LHC data should be precise enough to select one of the two approaches as the correct one.
