Spin-Dependent Antenna Splitting Functions

Details Spin-Dependent Antenna Splitting Functions Spin-Dependent Antenna Splitting Functions

2009-08-17

arxiv.org/abs/0908.2450v3

Phys.Rev.D81:054010,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

31 pages, 12 figures

Scientific paper

10.1103/PhysRevD.81.054010

We consider parton showers based on radiation from QCD dipoles or `antennae'. These showers are built from 2->3 parton splitting processes. The question then arises of what functions replace the Altarelli-Parisi splitting functions in this approach. We give a detailed answer to this question, applicable to antenna showers in which partons carry definite helicity, and to both initial- and final-state emissions.

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