Fluctuations of identified particle yields using the { u} dyn variable at energies available at the BNL Relativistic Heavy Ion Collider

We study the fluctuations of net-charge, net-pion, net-kaon and net-proton using $D$-measure and $ u_{dyn}$ variables in heavy-ion jet interaction generator (HIJING), ultra-relativistic quantum molecular dynamics (UrQMD), and hadron resonance gas (HRG) model at different collision energies sqsn. It has been observed that, the values of $D$ strongly dependent on $Delta eta$ in HIJING and UrQMD models and independent in HRG model. The diffusion coefficients ($sigma$) of identified particles are estimated at various sqsn. It is observed that, the $sigma$ values are independent of collision energies but emphasizes the particle species dependence of diffusion coefficient in the QGP medium. This study provides a realistic baseline for comparison with the experimental data.