Regular Article - Theoretical Physics
Summing large- towers in colour flow evolution
DESY, Notkestrasse 85, 22607 , Hamburg, Germany
* e-mail: firstname.lastname@example.org
Accepted: 15 May 2014
Published online: 3 June 2014
We consider soft-gluon evolution in the colour flow basis. We give explicit expressions for the colour structure of the (one-loop) soft anomalous dimension matrix for an arbitrary number of partons, and we show how the successive exponentiation of classes of large- contributions can be achieved to provide a systematic expansion of the evolution in terms of colour-suppressed contributions.
© SIF and Springer-Verlag Berlin Heidelberg, 2014