Small$-x$ Resummation Effects in Electroweak Processes

Details Small$-x$ Resummation Effects in Electroweak Processes Small$-x$ Resummation Effects in Electroweak Processes

1995-12-14

arxiv.org/abs/hep-ph/9512309v1

Nucl.Phys. B467 (1996) 25-43

Physics

High Energy Physics

High Energy Physics - Phenomenology

28 pages, latex, 3 figures appended as uuencoded file

Scientific paper

10.1016/0550-3213(96)00098-3

We investigate small$-x$ resummation effects in QCD coefficient functions for $Z_0g$ and $Wg$ fusion processes, and we compare them with the known ones of $\gamma g$ type. We find a strong process dependence, that we argue to be due to the possible presence of collinear singularities for either small or large $\k$ of the exchanged gluon. For top quark production, we find that the $gg\ra t\bar{t}$ and $Z_0g\ra t\bar{t}$ channels have larger resummation enhancements than the $Wg\ra t\bar{t}$ one.

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