Proton- correlations in central PbPb collisions at GeV

T Anticic, B Baatar, D Barna, J Bartke, H Beck… - Physical Review C …, 2011 - APS
T Anticic, B Baatar, D Barna, J Bartke, H Beck, L Betev, H Białkowska, C Blume, M Bogusz…
Physical Review C—Nuclear Physics, 2011APS
The momentum correlation between protons and Λ particles emitted from central Pb+ Pb
collisions at s NN= 17.3 GeV was studied by the NA49 experiment at the CERN Super
Proton Synchrotron. A clear enhancement is observed for small relative momenta (q inv< 0.2
GeV). By fitting a theoretical model, which uses the strong interaction between the proton
and the Λ in a given pair, to the measured data, a value for the effective source size is
deduced. Assuming a static Gaussian source distribution, we derive an effective radius …
The momentum correlation between protons and particles emitted from central PbPb collisions at GeV was studied by the NA49 experiment at the CERN Super Proton Synchrotron. A clear enhancement is observed for small relative momenta ( GeV). By fitting a theoretical model, which uses the strong interaction between the proton and the in a given pair, to the measured data, a value for the effective source size is deduced. Assuming a static Gaussian source distribution, we derive an effective radius parameter of (stat.)(syst.) fm.
American Physical Society