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Simple algorithm for polarized parton evolution

Stefan Höche1, Mareen Hoppe2, and Daniel Reichelt3

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Phys. Rev. D 113, 074032 – Published 28 April, 2026

DOI: https://doi.org/10.1103/f929-gwfg

Abstract

We present an algorithm to include the correlation between the production and decay planes of gluons in a parton-shower simulation. The technique is based on identifying the charge currents responsible for the creation and annihilation of the vector field. It is applicable in both the hard-collinear and the soft wide-angle region. As a function of the number of particles, the algorithm scales linear in computing time and memory. We demonstrate agreement with fixed-order perturbative calculations in the relevant kinematical limits, and present a new observable that can be used to probe correlations beyond current-current interactions.

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Phys. Rev. D 113, 074032– Published 28 April, 2026
  • Received 3 September 2025
  • Accepted 16 March 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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