"Total covariance matrix" of "Probing small Bjorken-$x$ nuclear gluonic structure via coherent J/$\psi$ photoproduction in ultraperipheral PbPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV"

The total covariance matrix of the total coherent photoproduction cross section as a function of photon-nuclear center-of-mass energy per nucleon $W_{\gamma \mathrm{N}}^{\mathrm{Pb}}$. The covariance matrix includes both the experimental and theoretical (photon flux) uncertainties. The bins are ordered as increasing in $W_{\gamma \mathrm{N}}^{\mathrm{Pb}}$.

以每个核子的光子-铅核质心系能量$W_{gamma mathrm{N}}^{mathrm{Pb}}$为自变量的总相干光生截面的总协方差矩阵。该协方差矩阵同时涵盖实验与理论（光子通量）两类不确定度，其数据分箱按照$W_{gamma mathrm{N}}^{mathrm{Pb}}$递增的顺序排布。