Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-01-31
Phys.Lett.B612:36-48,2005
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, 3 figures, minor typos corrected, references added
Scientific paper
10.1016/j.physletb.2005.02.039
The computation of exclusive QCD jet observables at higher orders requires a method for the subtraction of infrared singular configurations arising from multiple radiation of real partons. One commonly used method at next-to-leading order (NLO) is based on the antenna factorization of colour-ordered matrix elements, and uses antenna functions to subtract the real radiation singularities. Up to now, NLO antenna functions could be derived in a systematic manner only for hard quark-antiquark pairs, while the gluon-gluon and quark-gluon antenna functions were constructed from their limiting behaviour. In this paper, we show that antenna functions for hard quark-gluon pairs can be systematically derived from an effective Lagrangian describing heavy neutralino decay. The infrared structure of the colour-ordered neutralino decay matrix elements at NLO and NNLO is shown to agree with the structure observed for parton radiation off a quark-gluon antenna.
Gehrmann Thomas
Glover E. W. N.
Ridder Aude Gehrmann--De
No associations
LandOfFree
Quark-Gluon Antenna Functions from Neutralino Decay does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Quark-Gluon Antenna Functions from Neutralino Decay, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quark-Gluon Antenna Functions from Neutralino Decay will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-300215