Regular Article - Theoretical Physics
The midpoint between dipole and parton showers
SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA
* e-mail: email@example.com
Accepted: 16 September 2015
Published online: 28 September 2015
We present a new parton-shower algorithm. Borrowing from the basic ideas of dipole cascades, the evolution variable is judiciously chosen as the transverse momentum in the soft limit. This leads to a very simple analytic structure of the evolution. A weighting algorithm is implemented that allows one to consistently treat potentially negative values of the splitting functions and the parton distributions. We provide two independent, publicly available implementations for the two event generators Pythia and Sherpa.
© SIF and Springer-Verlag Berlin Heidelberg, 2015