Hard Scattering Factorization from Effective Field Theory
高能物理 - 唯象学
2009-11-07 v2
摘要
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).
引用
@article{arxiv.hep-ph/0202088,
title = {Hard Scattering Factorization from Effective Field Theory},
author = {Christian W. Bauer and Sean Fleming and Dan Pirjol and Ira Z. Rothstein and Iain W. Stewart},
journal= {arXiv preprint arXiv:hep-ph/0202088},
year = {2009}
}
备注
35 pages, 4 figures, typos corrected, journal version