Abstract
Parton shower algorithms are key components of theoretical predictions for high-energy collider physics. Work towards more accurate parton shower algorithms is thus pursued along many different avenues. The systematic treatment of subleading color corrections in parton shower algorithms is however technically challenging and remains elusive. In this article, we present an efficient and numerically stable algorithm to sample color configurations at fixed $N_C=3$, using the correct color factor including subleading corrections with a parton shower. The algorithm is implemented as stand-alone program that can be interfaced to the PYTHIA event generator. Preliminary comparisons to to LEP data are presented.
Highlights
High energy physics event generators are tools that enable comparisons of theory calculations to measurements at high-energy collider experiments [1]
The leading color (LC) baseline used as a comparison is a direct implementation of the final-state shower presented in
This article has presented the first implementation of a fixed color parton shower algorithm that remains numerically feasible and stable for an arbitrary number of emissions
Summary
High energy physics event generators are tools that enable comparisons of theory calculations to measurements at high-energy collider experiments [1]. This is achieved by simulating scattering events in as much detail as possible. Event generators are heavily used in analysis prototyping, to compare precision Standard-Model (SM) measurements to theory, or to derive indirect bounds on new phenomena. This is only possible if event generators incorporate precise calculations in perturbative QCD. Precision SM measurements or indirect limit setting using jet substructure will mean that some if not all of the parton shower approximations will have to be reevaluated and removed
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
