A model of non-perturbative gluon emission in an initial state parton shower

Abstract

We consider a model of transverse momentum production in which non-perturbative smearing takes place throughout the perturbative evolution, by a simple modification to an initial state parton shower algorithm. Using this as the important non-perturbative ingredient, we get a good fit to data over a wide range of energy. Combining it with the non-perturbative masses and cutoffs that are a feature of conventional parton showers also leads to a reasonable fit. We discuss the extrapolation to the LHC.

14 pages, 6 figures; version accepted by JHEP

References in corpus (3)

• Herwig++ Physics and Manual
• Z-boson as "the standard candle" for high precision W-boson physics at LHC
• Perturbative and Nonperturbative Effects in Transverse Momentum Generation

Cited by in corpus (10)

• Herwig++ Physics and Manual
• Colour reconnections in Herwig++
• Improving the Simulation of Quark and Gluon Jets with Herwig 7
• Collectivity from interference
• Initial State Radiation in the Herwig 7 Angular-Ordered Parton Shower
• Next-to-Leading Order Hard Scattering Using Fully Unintegrated Parton Distribution Functions
• The small kt-region in Drell-Yan production at next-to-leading order with the Parton Branching Method
• Center-of-mass energy dependence of intrinsic-$k_T$ distributions obtained from Drell-Yan production
• Interplay of intrinsic motion of partons and soft gluon emissions in Drell-Yan production studied with PYTHIA
• Collinear and TMD distributions with dynamical soft-gluon resolution scale