Nuclear modification factor in Pb-Pb and p-Pb collisions at √sNN=5.02 TeV at LHC energies using Boltzmann transport equation with tsallis blast wave description

In this article, we have studied the nuclear modification factor measured in the most central and peripheral Pb-Pb (R-PbPb) and p-Pb collisions (R-pPb) for pi(+/-), K-+/-, p + p, (K*(0) + K*(0))/2, phi and pi(+/-), K-+/-, p + p, respectively at Large hadron collider (LHC) energy of root s(NN) = 5.02 TeV. We have also analysed the experimental data of transverse momentum (p(T)) spectra for these identified hadrons at LHC for Pb-Pb as well as for p-Pb collisions. We have used Boltzmann transport equation (BTE) in relaxation time approximation (RTA) for this analysis. The Tsallis statistics is used as an initial distribution function and the Tsallis blast wave (TBW) model is employed as an equilibrium distribution in BTE. The present model fits the measured transverse momentum spectra, R-PbPb, and R-pPb successfully upto p(T) = 8 GeV/c with a reasonable chi(2)/nd for all the considered hadrons at various centralities. The experimental data for R-pPb are generated using the particle yields at p-Pb and pp collisions where number of binary collisions are taken from Glauber model calculations. We find that the average transverse flow velocity (< beta(r) >) decreases with the mass as well as when one move from the central collisions to the peripheral collisions. These findings are inline with the results of the hydrodynamics-inspired model calculations.