Invariant mass spectra for $2.5 < \pt < 3$ GeV/$c$ and $3.6 < \pt < 4.2$ GeV/$c$ in 0--90\% Pb--Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 2.76 TeV. The solid red line represents the result of the fit to the hadronic cocktail; the green dashed line represents the correlated background, given by the sum of all the MC sources other than $\phi$, $\rho$ and $\omega$ mesons.