Abstract

The anomalous scaling behaviour of two-dimensional second-order factorial moment F2 for shower particles produced in 28Si-emulsion collisions at 14.6 A GeV has been investigated. The slopes of ln ⟨F2⟩ versus ln M plots for different values of Hurst exponent H have been determined. The parameter ‘a’ that characterizes the upward bending of ln ⟨F2⟩ versus ln M plots has been determined. A comparison of our results with the corresponding results for events generated using UrQMD model indicates that the upward bending of the two-dimensional moment cannot be explained by the model.

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