Two-proton correlations from 158 AGeV Pb+Pb central collisions

Details Two-proton correlations from 158 AGeV Pb+Pb central collisions Two-proton correlations from 158 AGeV Pb+Pb central collisions

1999-05-05

arxiv.org/abs/nucl-ex/9905001v2

Phys.Lett.B467:21-28,1999

Physics

Nuclear Physics

Nuclear Experiment

RevTeX style, 6 pages, 4 figures, 1 table. More discussion are added about the structure on the tail of the correlation functi

Scientific paper

10.1016/S0370-2693(99)01152-1

The two-proton correlation function at midrapidity from Pb+Pb central collisions at 158 AGeV has been measured by the NA49 experiment. The results are compared to model predictions from static thermal Gaussian proton source distributions and transport models RQMD and VENUS. An effective proton source size is determined by minimizing CHI-square/ndf between the correlation functions of the data and those calculated for the Gaussian sources, yielding 3.85 +-0.15(stat.) +0.60-0.25(syst.) fm. Both the RQMD and the VENUS model are consistent with the data within the error in the correlation peak region.

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