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Event-by-event particle ratio fluctuations for simulated data sets of threedifferent models named UrQMD, AMPT, and Pythia are studied using thefluctuation variable $\nu_{dyn}$. The simulated data sets produced in $pp$collisions at four different LHC energies $\sqrt{s} = 2.76, 5.02, 7$ and $13$TeV are generated and considered for this analysis. The variation offluctuation parameter $\nu_{dyn}$ for accepted pair of meson and baryoncombination $i.e.$ $[\pi, K]$, $[\pi, p]$ and $[p, K]$ with the increasingvalue of the mean multiplicity of charged particles ($\langle N_{ch} \rangle$)are investigated. It has been observed that the correlation between theparticle pair $[\pi, K]$ is more than that of the two other particle pairs$[\pi, p]$ and $[p, K]$. However, the energy-wise inspection of the fluctuationvariable $\nu_{dyn}$ for $0-10\%$ centrality data shows the increase in thecorrelation between the particles in each pair for all three models considered.

Net-charge particle ratio fluctuations in $pp$ collisions at several LHC energies