Worldline approach to Sudakov-type form factors in non-Abelian gauge theories

Details Worldline approach to Sudakov-type form factors in non-Abelian gauge theories Worldline approach to Sudakov-type form factors in non-Abelian gauge theories

1997-07-18

arxiv.org/abs/hep-ph/9707392v1

Phys.Lett. B412 (1997) 95-103

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages. RevTex is used. No figures

Scientific paper

10.1016/S0370-2693(97)01055-1

We calculate Sudakov-type form factors for isolated spin-1/2 particles (fermions) entering non-Abelian gauge-field systems. We consider both the on- and the off-mass-shell case using a methodology which rests on a worldline casting of field theories. The simplicity and utility of our approach derives from the fact that we are in a position to make, a priori, a more transparent separation (factorization), with respect to a given scale, between short- and long-distance physics than diagramatic methods.

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