Effect of New Resonance States on Fluctuations and Correlations of Conserved Charges in a Hadron Resonance Gas Model

We investigate the role of suspected resonance states that are yet to be confirmed experimentally on the fluctuation and correlation between conserved charges using ideal hadron resonance gas (I-HRG) model. We observe that the lattice QCD data of \(\chi ^2_S, \chi ^{11}_{BS}\) in the hadronic phase can be described well by I-HRG model with inclusion of additional resonances. We have also studied the beam energy (\(\sqrt{s_{NN}}\)) dependence of the fluctuation observables of net charge. Proper experimental acceptance cuts as applicable to data from the relativistic heavy-ion collider have been used in the model to compare with the data from experimental measurements. We find that experimental data do not show much deviation from the baseline calculation of I-HRG model. The effect of additional resonances on fluctuation observables at different \(\sqrt{s_{NN}}\) has also been studied.