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Gluon-Gluon Antenna Functions from Higgs Boson Decay

A. Gehrmann-De Ridder·T. Gehrmann·E. W. N. Glover
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Abstract

Antenna functions describe the infrared singular behaviour of colour-ordered QCD matrix elements due to the emission of unresolved partons inside an antenna formed by two hard partons. In this paper, we show that antenna functions for hard gluon-gluon pairs can be systematically derived from the effective Lagrangian describing Higgs boson decay into gluons, and compute the the infrared structure of the colour-ordered Higgs boson decay matrix elements at NLO and NNLO.

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A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover. 2005-02-11. Gluon-Gluon Antenna Functions from Higgs Boson Decay. https://doi.org/10.1016/j.physletb.2005.03.003

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