Rare fluctuations and the high-energy limit of the S-matrix in QCD

Details Rare fluctuations and the high-energy limit of the S-matrix in QCD Rare fluctuations and the high-energy limit of the S-matrix in QCD

2003-09-24

arxiv.org/abs/hep-ph/0309276v1

Nucl.Phys.A730:494-513,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

28 pages, 5 figures

Scientific paper

10.1016/j.nuclphysa.2003.10.019

We argue that one cannot correctly calculate the elastic scattering S-matrix for high-energy dipole-dipole scattering, in the region where S is small, without taking fluctuations into account. The relevant fluctuations are rare and unimportant for general properties of inelastic collisions. We find that the Kovchegov equation, while giving the form of the S-matrix correctly, gives the exponential factor twice as large as the result which emerges when fluctuations are taken into account.

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