Non-perturbative effects in the transverse momentum distribution of electroweak bosons at the LHC

Abstract

The transverse momentum of electroweak bosons in a Drell-Yan process is an important quantity for the experimental program at the LHC. The new model of non-perturbative gluon emission in an initial state parton shower presented in this note gives a good description of this quantity for the data taken in previous experiments over a wide range of CM energy. The model's prediction for the transverse momentum distribution of Z bosons for the LHC is presented and used for a comparison with other approaches.

9 pages, 3 figures; based on a talk by Andrzej Siodmok at the Cracow Epiphany Conference on "Hadron interactions at the dawn of the LHC", 5-7 January 2009; dedicated to the memory of Jan Kwiecinski, to be published in Acta Physica Polonica