发表机构
Federal University of Pelotas (UFPel); Universidade do Estado de Santa Catarina（佩洛塔斯联邦大学; 圣卡塔琳娜州立大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文在颜色偶极子模型下研究矢量顶偶素$\psi_t$的独占光产生，利用增强高斯方法估计重叠函数，并预测了LHeC、LHC和FCC能量下的截面与快度分布，发现FCC-hh超外围质子碰撞中该过程可行。
AI 中文摘要
在颜色偶极子模型内研究了顶偶素矢量介子（$\psi_t$）的独占光产生。利用增强高斯方法估计了矢量顶偶素态的光锥波函数与光子波函数之间的重叠函数。考虑到小偶极子的主导地位，偶极子-质子散射振幅通过部分子分布函数来估计，并给出了在拟议的大型强子电子对撞机（LHeC）能量范围内光产生截面的预测。此外，还计算了在大型强子对撞机（LHC）和未来环形对撞机（FCC）能量下超外围质子-质子和质子-核碰撞中独占 $\psi_t$ 光产生的截面和快度分布。我们发现，在FCC-hh的超外围 $pp$ 碰撞中，独占 $\psi_t$ 光产生原则上可行。
英文摘要
The exclusive photoproduction of the toponium vector meson ($ψ_t$) is investigated within the color dipole model. The overlap function between the light-cone wave function of the vector toponium state and the photon wave function is estimated using the Boosted Gaussian approach. Considering the dominance of small dipoles, the dipole-proton scattering amplitude is estimated in terms of parton distribution functions, and predictions for the photoproduction cross-section in the energy range of the proposed Large Hadron electron Collider (LHeC) are presented. Moreover, the cross-sections and rapidity distributions for the exclusive $ψ_t$ photoproduction in ultraperipheral proton-proton and proton - nucleus collisions at the Large Hadron Collider (LHC) and Future Circular Collider (FCC) energies are calculated. We find that exclusive $ψ_t$ photoproduction is, in principle, feasible in ultraperipheral $pp$ collisions at the FCC-hh.
Comments14 pages, 7 figures, 2 tables
