Efficiency and acceptance corrected deuteron spectra for Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV in various centrality classes and for inelastic pp collisions at $\sqrt{s}$ =7 TeV. The dashed lines represent an individual fit with the BW function (Eq. 6) in the case of Pb-Pb spectra and with the function presented in (Eq. 5) in the case of the pp spectrum (see text for details). The boxes show systematic error and vertical lines show statistical error separately.