https://doi.org/10.1140/epjc/s10052-014-2907-2
Regular Article - Theoretical Physics
Summing large-
towers in colour flow evolution
DESY, Notkestrasse 85, 22607 , Hamburg, Germany
* e-mail: simon.plaetzer@desy.de
Received:
14
December
2013
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
