Related paper K$^0_s$K$^0_s$ correlations in pp collisions at $\sqrt{s}=7$ TeV from the LHC ALICE experiment Ratio of K$^0_s$K$^0_s$ experimental background to PYTHIA background vs. $Q_{\rm inv}$ for the range $N_{\rm ch}$ 1-11, $k_{\rm T}< 0.85$ GeV/c. The average of the ratio is normalized to unity.[png] [pdf]