论文标题
LHC处的氧气和铅铅碰撞的独家$ j/ψ$光生效的近代领先订单QCD预测
Next-to-leading order perturbative QCD predictions for exclusive $J/ψ$ photoproduction in oxygen-oxygen and lead-lead collisions at the LHC
论文作者
论文摘要
我们介绍了相干$ j/ψ$光孕在铅和氧气超胶质碰撞（UPCS）中相干$ j/ψ$光子的横截面，这是LHC在下一度范围（NLO）中（nlo）在驱动式QCD中的$ j/ψ$ apparive的函数的函数。在其前部限制和使用EPPS21，NNNPDF3.0和NCTEQ15WZSIH核Parton分布功能方面掌握广义的Parton分布函数，我们更新了PB-PB碰撞的最新结果，对O-O碰撞进行了几种光束能量配置的详细预测，并检查了O-O-O和Pb-PB-PB-PB-P-PB-PUPC UPC Sections的比例。我们表明，后者可观察到的允许人们显着降低此过程中NLO预测的规模不确定性。
We present predictions for the cross sections of coherent $J/ψ$ photoproduction in lead-lead and oxygen-oxygen ultraperipheral collisions (UPCs) as a function of the $J/ψ$ rapidity at the LHC in the framework of collinear factorization at next-to-leading order (NLO) in perturbative QCD. Taking generalized parton distribution functions in their forward limit and using the EPPS21, nNNPDF3.0, and nCTEQ15WZSIH nuclear parton distribution functions, we update our recent results for Pb-Pb collisions, make detailed predictions for O-O collisions for several beam energy configurations, and examine the ratio of O-O and Pb-Pb UPC cross sections. We show that the latter observable allows one to significantly reduce the scale uncertainty of NLO predictions for this process.
