论文标题
J/PSI和PSI（2s）照片产生作为QCD低X进化方程的探针
Exclusive J/Psi and Psi(2s) photo-production as a probe of QCD low x evolution equations
论文作者
论文摘要
我们使用2件拟合的Gluon分布拟合，根据HERA和LHC数据研究了载体介子J/PSI和PSI（2s）的照片产生。后者受到非线性Balitsky-Kovchegov进化（Kutak-Sapeta gluon; KS）的约束，并分别是线性秩序Balitsky-Kuraev-Kuraev-fadin-lipatov Evolution（Hentschinski-Sabio-Sabio vera-Salas; HSS Gluon）。除了将先前的研究扩展到径向激发的charmonium psi（2s）外，我们还进一步使用了一组改进的charmonium波函数，并提供了与HSS Gluon相关的不确定性的估计。尽管我们观察到线性和非线性演化之间的差异在某种程度上减少了，并且使用当前可用的数据集不再可能使用HSS和KS Gluon之间的明显区别，但我们发现两种GLUON分布之间的差异都得到了增强，因为PSI（2S）和J/PSI Vector Vector Vector Vector Vector Vector Vector Vector Vector Vector Vector vector vector vector vector vector vector vector vector vector vector vector vector vector vector vector vector vector vector vector mess。
We investigate photo-production of vector mesons J/Psi and Psi(2s), based on both HERA and LHC data, using 2 fits of unintegrated gluon distributions. The latter are subject to non-linear Balitsky-Kovchegov evolution (Kutak-Sapeta gluon; KS) and linear next-to-leading order Balitsky-Kuraev-Fadin-Lipatov evolution (Hentschinski-Sabio Vera-Salas; HSS gluon) respectively. Apart from extending previous studies to the case of radially excited charmonium Psi(2s), we further use an improved set of charmonium wave functions and provide an estimate of the uncertainties associated with the HSS gluon. While we observe that the difference between linear and non-linear evolution somehow diminishes and a clear distinction between both HSS and KS gluon is no longer possible using the currently available data-set, we find that the differences between both gluon distributions are enhanced for the ratio of the photo-production cross-sections of Psi(2s) and J/Psi vector mesons.
