A new approach to color-coherent parton evolution

Herren, Florian; Höche, Stefan; Krauss, Frank; Reichelt, Daniel; Schönherr, Marek

Abstract

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 Alaric and present a first comparison to experimental data.

Citation

Herren, F., Höche, S., Krauss, F., Reichelt, D., & Schönherr, M. (2023). A new approach to color-coherent parton evolution. Journal of High Energy Physics, 2023(10), Article 91. https://doi.org/10.1007/jhep10%282023%29091

• Journal Article Type: Article
• Acceptance Date: Oct 3, 2023
• Online Publication Date: Oct 16, 2023
• Publication Date: 2023-10
• Deposit Date: Oct 23, 2023
• Publicly Available Date: Oct 23, 2023
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2023
• Issue: 10
• Article Number: 91
• DOI: https://doi.org/10.1007/jhep10%282023%29091
• Keywords: Resummation, Parton Shower
• Public URL: https://durham-repository.worktribe.com/output/1807740