The real radiation antenna function for $S \to Q {\bar Q} q {\bar q}$ at NNLO QCD

Details The real radiation antenna function for $S \to Q {\bar Q} q {\bar q}$ at NNLO QCD The real radiation antenna function for $S \to Q {\bar Q} q {\bar q}$ at NNLO QCD

2011-05-03

arxiv.org/abs/1105.0530v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 32 pages

Scientific paper

As a first step towards the application of the antenna subtraction formalism to NNLO QCD reactions with massive quarks, we determine the real radiation antenna function and its integrated counterpart for reactions of the type $S \to Q{\bar Q} q {\bar q}$, where $S$ denotes an uncolored initial state and $Q$, $q$ a massive and massless quark, respectively. We compute the corresponding integrated antenna function in terms of harmonic polylogarithms. As an application and check of our results we calculate the contribution proportional to $\alpha_s^2 e^2_Q N_f$ to the inclusive heavy-quark pair production cross ection in $e^+e^-$ annihilation.

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