Antenna Subtraction in pQCD at NNLO

Details Antenna Subtraction in pQCD at NNLO Antenna Subtraction in pQCD at NNLO

2011-11-21

arxiv.org/abs/1111.4810v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 6 figures, RADCOR 2011, Mamallapuram, India

Scientific paper

In this talk I discuss the antenna subtraction method for isolating infrared (IR) singularities of jet cross sections in perturbative QCD. The method is applied at next-to-next-to-leading order (NNLO) to dijet production in hadron collisions at the LHC. The double real radiative corrections to the dijet cross section are considered and their IR behaviour is examined. IR subtraction terms are constructed to absorb numerical divergences of the cross section in the single and double unresolved regions of phase space using the antenna subtraction method. A pictorial representation of matrix elements and antenna functions is presented with specific examples of how such diagrams can be used in practical calculations.

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