Journal
PHYSICS LETTERS B
Volume 693, Issue 3, Pages 259-268Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2010.08.036
Keywords
QCD corrections; NNLO calculations; IR subtraction schemes
Funding
- Deutsche Forschungsgemeinschaft
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A general subtraction scheme, STRIPPER (SecToR Improved Phase sPacE for real Radiation), is derived for the evaluation of next-to-next-to-leading order (NNLO) QCD contributions from double-real radiation to processes with at least two particles in the final state at leading order. The result is a Laurent expansion in the parameter of dimensional regularization, the coefficients of which should be evaluated by numerical Monte Carlo integration. The two main ideas are a two-level decomposition of the phase space, the second one factorizing the singular limits of amplitudes, and a suitable parameterization of the kinematics allowing for derivation of subtraction and integrated subtraction terms from eikonal factors and splitting functions without non-trivial analytic integration. (C) 2010 Elsevier B.V. All rights reserved.
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