The different styles of gluon are:
The different directions may be illustrated by the following file:
% EXAMPLE OF USING FEYNMAN TO DRAW gluon DIAGRAMS IN TEX. \documentstyle [11pt]{article} \input FEYNMAN \begin {document} \centerline{GLUONBURST using FEYNMAN} \vskip 0.75in \hskip 1.5in \begin{picture}(20000,20000)(-10000,-10000) \put(0,0){\circle*{1500}} \drawline\gluon[\N\CENTRAL](0,0)[10] \drawline\gluon[\NE\REG](0,0)[8] \drawline\gluon[\E\CENTRAL](0,0)[10] \drawline\gluon[\SE\REG](0,0)[8] \drawline\gluon[\S\CENTRAL](0,0)[10] \drawline\gluon[\SW\REG](0,0)[8] \drawline\gluon[\W\CENTRAL](0,0)[10] \drawline\gluon[\NW\REG](0,0)[8] \end{picture}Which produces: