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arXiv · hep-ph/0309276

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

Edmond Iancu·A. H. Mueller
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Abstract

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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Edmond Iancu, A. H. Mueller. 2003-09-24. Rare fluctuations and the high-energy limit of the S-matrix in QCD. https://doi.org/10.1016/j.nuclphysa.2003.10.019

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