A Detailed Comparison of Exclusive 1 GeV a Au on C Data with the Statistical Multifragmentation Model (SMM)

Abstract

The mimimum requirement for a meaningful comparison of the 1 GeV Au on C data with the SMM¹ predications is that the mass AR the charge Z _R , and the excitation energy E _x of the multifragmenting system be determined on an event by event basis. This can only be done if a full reconstruction of the collision is possible for each event. The EOS data^2–4 provides a complete charge and momentum reconstruction for every event. Average fragment masses are determined. The basic remnant information A _R (Z_R, E_X) is also used as input information for the SMM calculation. Thus a fragmentation event produced by SMM consists of M_2s fragments with masses A _F and charge Z _F. A data fragmentation event consists of M_2D fragments with mass A _F and charge Z _F . Since the remnant mass A _R = A _AU - M₁ where M₁ is the collisional particle multiplicity, it is convenient to introduce the total charged particle multiplicity M _T for both the SMM predictions and the data. M _T = M _2s + M₁ for the SMM events and M _T = M _2D + M₁ for the Au on C events.