Charge Fluctuations in <i>pp</i> and <i>AA</i> Collisions at RHIC and LHC Energies
- 1 Department of Physics, Aligarh Muslim University, Aligarh, India
- 2 Department of Physics, Aligarh Muslim University, Aligarh, India
- 3 Department of Physics, Aligarh Muslim University, Aligarh, India
- 4 Department of Applied Physics, Aligarh Muslim University, Aligarh, India
Abstract
Various measures of event-by-event net charge and charge ratio fluctuations in pp and AA collisions at RHIC and LHC energies are studied using the different Monte Carlo generators: URQMD, HIJING and HIJING/ and the results are compared with the predictions for the independent emission, hadron gas and QGP phase. Values of the D-measures are observed to exhibit significant energy dependence for both pp and AA data. Furthermore, there is essentially no significant difference in the values of the D-measures predicted by the various Monte Carlo codes used in the present study. A slight centrality dependence of the D-measures in terms of net charge fluctuations is observed in the case of Au-Au data at 200A GeV/c. These findings, thus, suggest that a difference in the D-measures for pp and AA collisions either the re-scattering effect plays a predominant role or there might be some new physics present in these collisions.
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