A new approach to color-coherent parton evolution
Florian Herren, Stefan Höche, Frank Krauss, Daniel Reichelt, Marek Schönherr
Abstract
A bstract We present a simple parton-shower model that replaces the explicit angular ordering of the coherent branching formalism with a differentially accurate simulation of soft-gluon radiation by means of a non-trivial dependence of the splitting functions on azimuthal angles. We introduce a global kinematics mapping and provide an analytic proof that it satisfies the criteria for next-to leading logarithmic accuracy. In the new algorithm, initial and final state evolution are treated on the same footing. We provide an implementation for final-state evolution in the numerical code A laric and present a first comparison to experimental data.
Topics & Concepts
PhysicsPartonFormalism (music)GluonLogarithmParton showerKinematicsAzimuthParticle physicsStatistical physicsTheoretical physicsQuantum chromodynamicsClassical mechanicsMathematical analysisOpticsMusicalArtVisual artsMathematicsParticle physics theoretical and experimental studiesHigh-Energy Particle Collisions ResearchBlack Holes and Theoretical Physics