25-27 May 2021
Europe/Zurich timezone

Subleading colour effects in the PanScales parton showers and beyond

26 May 2021, 16:00
15m
Talk Talks

Speaker

Ludovic Scyboz (University of Oxford)

Description

It is known that standard dipole showers yield incorrect subleading-colour contributions already at leading-logarithmic level for certain observables. In this talk, I will present two new, simple prescriptions to palliate this issue. I will show how the resulting colour-corrected matrix elements are cured at fixed order in the appropriate limits. I will then demonstrate how the two algorithms allow us to achieve full-colour next-to-leading logarithmic accuracy for various observables (global observables and multiplicities). I will conclude by commenting on the comparison to full-colour NLL-resummed results for non-global observables.

Primary authors

Gavin Salam (University of Oxford) Gregory Soyez (IPhT, CEA Saclay) Keith Hamilton (University College London (GB)) Ludovic Scyboz (University of Oxford) Rok Medveš (University of Oxford)

Presentation materials