"parton_abs_M3l_covariance_stat" of "Inclusive and differential cross section measurements of single top quark production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

Covariance matrix for the measurement of the differential cross sections as a function of the invariant mass of the three-lepton system at parton level.针对部分子层次下以三轻子系统不变质量为函数的微分截面测量的协方差矩阵。