Figure 1

Invariant mass (left) and $p_{T}$ distributions (right) for ultra-peripheral Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}} } = 2.76$ TeV and $-0.9 < y < 0.9$ forevents satisfying the event selections in Sec.3 The channels $\psi(\rm{2S})$ $\rightarrow l^{+}l^{-}$ are shown on the top panel ($l^+l^-=e^{+}e^{-}$ and $\mu^+\mu^-$), the $\psi(\rm{2S})$ $\rightarrow \pi^{+}\pi^{-}\mu^{+}\mu^{-}$ channel is shown in the central and the channel $\psi(\rm{2S})$ $\rightarrow \pi^{+}\pi^{-}e^{+}e^{-}$ in thebottom one. The number of event is obtained by the fit (top panel) or by event counting in a selected invariantmass region (central and bottom panel), see text.