arXiv:1904.11866
MAN/HEP/2019/003
CERN-TH-2019-047
MCnet-19-08
IPPP/19/30

by: Bewick, Gavin (Durham U., IPPP) et al.

Abstract:
We study the logarithmic accuracy of angular-ordered parton showers by considering the singular limits of multiple emission matrix elements. This allows us to consider different choices for the evolution variable and propose a new choice which has both the correct logarithmic behaviour and improved performance away from the singular regions. In particular the description of $e^+e^-$ event shapes in the non-logarithmic region is significantly improved.