26-30 March 2012
University of Bonn
Europe/Berlin timezone

A comparative study of small x Monte Carlos with and without QCD coherence effects

29 Mar 2012, 12:20
20m
Lecture Hall, Institute for Applied Physics (University of Bonn)

Lecture Hall, Institute for Applied Physics

University of Bonn

Diffraction and vector mesons Diffraction and vector mesons

Speaker

Dr Michal Deak (Universidade de Santiago de Compostela)

Description

We compare two Monte Carlo implementations of resummation schemes for the description of parton evolution at small values of Bjorken x. One of them if based on the BFKL evolution equation. The other one is based on the CCFM partonic kernel where QCD coherence effects are introduced. It has been argued that both approaches agree with each other in the x to 0 limit. We show that this is not the case for azimuthal angle dependent quantities since at high energies the BFKL approach is dominated by its zero conformal spin component while the CCFM gluon Green function receives contributions from all conformal spins even at very small x.

Primary authors

Agustin Sabio Vera (CERN) Grigorios Chachamis (Paul Scherrer Institut) Dr Michal Deak (Universidade de Santiago de Compostela) Philip Stephens (Lancaster University)

Presentation Materials