Related paper Neutral pion and $η$ meson production in proton-proton collisions at $\sqrt{s}=0.9$ TeV and $\sqrt{s}=7$ TeV Ratio of the two independent $\pi^0$ meson measurements to the fit of the combined normalized invariant production cross section of $\pi^0$ mesons in pp collisions at $\sqrt{s}=7$ TeV.[png] [eps]