NUKLEONIKA 2006, 51(Suppl. 3):s83-s87
Guy Paić1, Piotr K. Skowroński2,3
1 Instituto de Ciencias Nucleares, UNAM, Mexico City, Mexico
2 CERN, CH-1211 Geneva 23, Switzerland
3 Warsaw University of Technology, Faculty of Physics,
75 Koszykowa Str., 00-662 Warsaw, Poland
The HBT radii extracted in pp and p(anti)p collisions at SPS and Tevatron show a clear correlation with
the charged particle rapidity density. We propose to explain the correlation using a simple model
where the distance from the initial hard parton-parton scattering to the hadronization point depends
on the energy of the partons emitted. Since the particle multiplicity is correlated with the mean
energy of the partons produced we can explain the experimental observations without invoking scenarios
that assume a thermal fireball. The model has been applied with success to the existing experimental
data both in the magnitude and the intensity of the correlation. The model has also been extended to
pp collisions at the LHC energy of 14 TeV. The possibilities of a better insight into the string
spatial development using 3D HBT analysis are discussed.