Transverse momentum and pseudo-rapidity density distributions of charged particles produced in pp and Au-Au collisions at √sNN=200 GeV at RHIC

In this paper, we have reported the transverse momentum (p(T)) spectra of averaged charged pions (pi(+/-)), kaons (K-+/-), protons and antiprotons in pp andmost central 0-6% Au-Au collisions at root s(NN) = 200 GeV. The simulation is done by models including EPOS-LHC, EPOS-1.99, and QGSJETII-04. The transverse momentum (pT) distributions are plotted for (pi(+) + pi(-))/2, (K+ + K-)/2 and (p + (p) over bar)/2 in the p(T) range of 0< p(T) < 3 GeV/c, 0< p(T) < 2 GeV/c and 0.5< pT < 4.5 GeV/c, respectively. We have also plotted the pseudo-rapidity distributions of charged hadrons produced in pp and Au-Au collisions at root s(NN) = 200 GeV. This analysis also includes the nuclear modification factor (RAA) which is plotted as a function of p(T) to study the effects of deconfined medium created in most central Au-Au collisions. Simulation data are compared with the experimental data. The simulated distributions are compared to the RHIC experimental data at root s(NN) = 200 GeV for both collision systems in order to validate the above-mentioned simulation codes. Although it is observed that a good comparison exists between the models predictions and experimental data but none of them completely describe the experimental data over the entire p(T) and eta range.