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DOE OSTI · 1886000

A new approach to color-coherent parton evolution

Herren, Florian·Höche, Stefan·Krauss, Frank·Reichelt, Daniel·Schönherr, Marek
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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.

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Herren, Florian, Höche, Stefan, Krauss, Frank, Reichelt, Daniel, Schönherr, Marek. 2023-10-16. A new approach to color-coherent parton evolution. https://doi.org/10.1007/jhep10(2023)091

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