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arXiv · hep-ph/9806482

A resummation of large sub-leading corrections at small x

G. P. Salam
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Abstract

The NLL corrections to the BFKL kernel are known to be very large, to the extent that even for small values of alpha_s, they lead to physical cross sections which are not positive definite. It is shown in the context of a toy model, that such pathological behaviour is an artifact of the truncation at NLL order, and is associated in particular with double transverse logarithms. These are resummed in a manner consistent with the full NLL kernel, and are shown to change its properties quite considerably.

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G. P. Salam. 1998-09-16. A resummation of large sub-leading corrections at small x. https://doi.org/10.1088/1126-6708%2F1998%2F07%2F019

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