QCD Seminars

Colour evolution and a new perspective on hadronization models

by Simon Platzer (University of Graz (AT))

Europe/Zurich
4/S-030 (CERN)

4/S-030

CERN

30
Show room on map
Description

Colour evolution is a tool to build parton shower and resummation algorithms, possibly beyond the large-N limit. In this talk I will outline how we can determine colour evolution equations for the hard scattering alongside those of a soft factor by appreciating the role of a perturbative infrared cutoff as a factorization scale. This analysis has a significant impact on how we understand and build hadronization models and corrections, ranging from the physics of colour reconnection to the dynamics at the "UV" scale of the hadronization process. It also instructs us to think differently of the way we assign comprehensive uncertainties to event generators, and how we interpret their parameters. Besides the theoretical framework I will show concrete steps and improvements in Herwig's cluster model building on this new paradigm, and the stepping stones towards a hadronization model for amplitude level parton showers.

Videoconference
QCD seminars
Zoom Meeting ID
62752332519
Host
Elena Gianolio
Alternative hosts
Michelangelo Mangano, John Cassar, Silvia Ferrario Ravasio, Pascal Pignereau, Juan M. Cruz Martinez, Simone Zoia
Passcode
37431264
Useful links
Join via phone
Zoom URL