A zero-dimensional model for high-energy scattering in QCD

Details A zero-dimensional model for high-energy scattering in QCD A zero-dimensional model for high-energy scattering in QCD

2006-06-23

arxiv.org/abs/hep-ph/0606253v3

Nucl.Phys.A784:227-258,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

34 pages, 9 figures. Some explanations added on the frame-dependence of the relevant configurations (new section 3.3)

Scientific paper

10.1016/j.nuclphysa.2006.11.127

We investigate a zero-dimensional toy model originally introduced by Mueller and Salam which mimics high-energy scattering in QCD in the presence of both gluon saturation and gluon number fluctuations, and hence of Pomeron loops. Unlike other toy models of the reaction-diffusion type, the model studied in this paper is consistent with boost invariance and, related to that, it exhibits a mechanism for particle saturation close to that of the JIMWLK equation in QCD, namely the saturation of the emission rate due to high-density effects. Within this model, we establish the dominant high-energy behaviour of the S-matrix element for the scattering between a target obtained by evolving one particle and a projectile made with exactly n particles. Remarkably, we find that all such matrix elements approach the black disk limit S=0 at high rapidity Y, with the same exponential law: ~ exp(-Y) for all values of n. This is so because the S-matrix is dominated by rare target configurations which involve only few particles. We also find that the bulk distribution for a saturated system is of the Poisson type.

Affiliated with

Also associated with

No associations

Rating

A zero-dimensional model for high-energy scattering in QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A zero-dimensional model for high-energy scattering in QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A zero-dimensional model for high-energy scattering in QCD will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-529447