Analysis of [formula omitted] spectra for [formula omitted] mesons in [formula omitted]–[formula omitted] collisions at 200 GeV, using PYTHIA and Tsallis function

Abstract

The ϕ(1020)0 mesons produced by asymmetric Cu–Au collisions at sNN=200GeV in the pseudorapidity region of |η|<0.35 is studied in relation to the transverse momentum (pT). The nuclear modification factor (RAB) is also calculated for ϕ(1020)0 mesons. To validate the model’s predictions, the simulations are compared to the experimental data from PHENIX using the PYTHIA8 and tuned to color reconnection mode. A systematically close relationship exists between PYTHIA8 predictions and the PHENIX data. PYTHIA CR1 mode predictions do not agree well with PHENIX experimental data. In addition to the RAB predictions, we investigated the ratio between the production of ϕ(1020)0 mesons to K∗(892)0 mesons and Λ baryons in Cu–Au collisions at sNN=200GeV. A comparison of the ϕ(1020)0 mesons yield produced by symmetric Au–Au and Cu–Cu collisions at sNN=200GeV are conducted using PYTHIA8 for comparison against asymmetric Cu–Au collisions. In this study, we also fit thermodynamically consistent Tsallis distribution functions for ϕ(1020)0 mesons onto experimental RHIC (PHENIX) pT spectra obtained from Cu–Au collisions at sNN=200GeV energy.