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arXiv · 1408.6409

Two-loop helicity amplitudes for the production of two off-shell electroweak bosons in quark-antiquark collisions

Fabrizio Caola·Johannes M. Henn·Kirill Melnikov·Alexander V. Smirnov·Vladimir A. Smirnov
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Abstract

Knowledge of two-loop QCD amplitudes for processes $q\bar q \to V_1 V_2 \to (l_1\bar l'_1)(l_2 \bar l'_2)$ is important for improving the theoretical description of four-lepton production in hadron collisions. In this paper we compute these helicity amplitudes for all intermediate vector bosons, $V_1 V_2 = γ^*γ^*, WW, ZZ, WZ, W γ^*$, including off-shell effects and decays to leptons.

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Fabrizio Caola, Johannes M. Henn, Kirill Melnikov, Alexander V. Smirnov, Vladimir A. Smirnov. 2015-03-18. Two-loop helicity amplitudes for the production of two off-shell electroweak bosons in quark-antiquark collisions. https://doi.org/10.1007/jhep11(2014)041

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