Spin correlations in final-state parton showers and jet observables Alexander Karlberg, Gavin P. Salam, Ludovic Scyboz and Rob Verheyen Eur. Phys. J. C, 81 8 (2021) 681 Published online: 02 August 2021 DOI: 10.1140/epjc/s10052-021-09378-0