Matching of Singly- and Doubly-Unresolved Limits of Tree-level QCD Squared Matrix Elements
Gábor Somogyi, Zoltán Trócsányi, Vittorio Del Duca
Abstract
We describe how to disentangle the singly- and doubly-unresolved (soft and/or collinear) limits of tree-level QCD squared matrix elements. Using the factorization formulae presented in this paper, we outline a viable general subtraction scheme for computing next-to-next-to-leading order corrections for electron-positron annihilation into jets.
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