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In this article, we have studied the nuclear modification factor measured inPb-Pb collisions ($R_{PbPb}$) for $\pi^{\pm}$, $K^{\pm}$, $p+\bar{p}$, $K^{*0}+ \bar{K^{*0}}$, $\phi$ and in p-Pb collisions ($R_{pPb}$) for $\pi^{\pm}$,$K^{\pm}$, $p+\bar{p}$ at Large hadron collider (LHC) energy of $\sqrt{s_{NN}}$= 5.02 TeV for the most central and peripheral collisions. We have alsoanalysed the experimental data of transverse momentum ($p_T$) spectra for theseidentified hadrons at LHC for Pb-Pb as well as for p-Pb collisions. We haveused Boltzmann transport equation (BTE) in relaxation time approximation (RTA)for this analysis. The Tsallis statistics is used as an initial distributionfunction and The Tsallis blast wave (TBW) model is employed as an equilibriumdistribution in BTE. The present model fits the measured transverse momentumspectra, $R_{PbPb}$, and $R_{pPb}$ successfully upto $p_T$ = 8 GeV with areasonable $\chi^2/ndf$ for all the considered hadrons at various centralities.The experimental data for $R_{pPb}$ are generated using the particle yields atpPb and pp collisions where number of binary collisions are taken from Glaubermodel calculations. We find that the average transverse flow velocity($<\beta_r>$) follows the mass and centrality ordering and decreases with themass as well as when one move from the central collisions to peripheralcollisions. These findings are inline with the results of the hydrodynamicalcalculations.

Nuclear Modification Factor in Pb-Pb and p-Pb collisions at  $\sqrt{s_{NN}}$=5.02 TeV at LHC energies using Boltzmann Transport Equation  with Tsallis Blast Wave Description