Hard Scattering Factorization from Effective Field Theory

Details Hard Scattering Factorization from Effective Field Theory Hard Scattering Factorization from Effective Field Theory

2002-02-11

arxiv.org/abs/hep-ph/0202088v2

Phys.Rev. D66 (2002) 014017

Physics

High Energy Physics

High Energy Physics - Phenomenology

35 pages, 4 figures, typos corrected, journal version

Scientific paper

10.1103/PhysRevD.66.014017

In this paper we show how gauge symmetries in an effective theory can be used to simplify proofs of factorization formulae in highly energetic hadronic processes. We use the soft-collinear effective theory, generalized to deal with back-to-back jets of collinear particles. Our proofs do not depend on the choice of a particular gauge, and the formalism is applicable to both exclusive and inclusive factorization. As examples we treat the pi-gamma form factor (gamma gamma* -> pi^0), light meson form factors (gamma* M -> M), as well as deep inelastic scattering (e- p -> e- X), Drell-Yan (p pbar -> X l+ l-), and deeply virtual Compton scattering (gamma* p -> gamma(*) p).

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