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arXiv · hep-ph/9902248

The gluon field of a fast moving nucleus and the effective langrangian for QCD at high energy

Ph. Hagler·A. Schafer·R. Kirschner·L. Szymanowski
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Abstract

Starting from the effective lagrangian for QCD at high energy we calculate the lowest perturbative contributions to the potential of a relativistic nucleus and compare our results to those derived by Kovchegov (see Y.V. Kovchegov, Phys. Rev. {\bf D55}, 5445 (1997)). The results differ already at order g^3 which can be traced to the fact that the meaning of the underlying gluon fields is different. (The effective gluon field we use is a gauge invariant object.) Both approaches should therefore be seen as alternatives, the relative merits of which have to be judged by their phenomenological success.

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Ph. Hagler, A. Schafer, R. Kirschner, L. Szymanowski. 1999-02-25. The gluon field of a fast moving nucleus and the effective langrangian for QCD at high energy. https://doi.org/10.1103/physrevd.60.054006

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