On the Sudakov suppression and enhancement for electroweak reactions

Details On the Sudakov suppression and enhancement for electroweak reactions On the Sudakov suppression and enhancement for electroweak reactions

2002-11-19

arxiv.org/abs/hep-ph/0211302v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages RevTex4, 2 figs

Scientific paper

Accounting for the double-logarithmic (DL) contributions to amplitude of Z to
f \bar{f} leads to the Sudakov suppression. In contrast, resumming DL
contributions to amplitudes of W to f \bar{f}' results into an exponential with
a positive exponent, i.e. into the enhancement. This effect is intrinsic
property of the theories with non-Abelian gauge groups.

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