Effect of hard processes on momentum correlations in $pp$ and $p\bar{p}$ collisions

Details Effect of hard processes on momentum correlations in $pp$ and $p\bar{p}$ collisions Effect of hard processes on momentum correlations in $pp$ and $p\bar{p}$ collisions

2005-04-06

arxiv.org/abs/hep-ph/0504051v1

J.Phys. G31 (2005) 1045-1054

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 6 figures

Scientific paper

10.1088/0954-3899/31/9/007

The HBT radii extracted in p-pbar and pp 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. As well, the model has 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 is discussed.

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