A three component model for hadron PT-spectra in pp and Pb-Pb collisions at the LHC

A three component model, consisting of the hydrodynamical blast-wave term and two power-lawterms, is proposed for an improved fitting of the hadron spectra measured at midrapidity and for arbitrary transverse momenta (P-T) in pp and heavy-ion collisions of different centralities at the LHC. The model describes well the available experimental data for all considered particles from pions to charmonia in pp at root s = 2.76, 5.02, 7, 8 and 13 TeV and in Pb-Pb at root s(NN) = 2.76 and 5.02 TeV.

Automated summary

The three component model proposed provides a good fit for hadron spectra measured at midrapidity and for arbitrary transverse momenta in pp and heavy-ion collisions of different centralities at the LHC. The model described the experimental data well for all considered particles from pions to charmonia in pp at root s = 2.76, 5.02, 7, 8 and 13 TeV and in Pb-Pb at root s(NN) = 2.76 and 5.02 TeV.