A new approach to color-coherent parton evolution

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

doi:10.1007/jhep10(2023)091

Title: A new approach to color-coherent parton evolution

Journal Article · 15 October 2023 · Journal of High Energy Physics (Online)

DOI: https://doi.org/10.1007/jhep10(2023)091 · OSTI ID:1886000

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^[1]; Krauss, Frank ^[2];

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Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Durham University (United Kingdom)

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.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP); European Union’s Horizon 2020; Royal Society Wolfson Research; German Research Foundation (DFG)

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1886000

Report Number(s):: FERMILAB-PUB--22-556-T; IPPP/22/58; MCNET-22-14; arXiv:2208.06057; oai:inspirehep.net:2135530

Journal Information:: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 10 Vol. 2023; ISSN 1029-8479

Publisher:: Springer NatureCopyright Statement

Country of Publication:: United States

Language:: English

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