Soft gluon–quark–antiquark emission in QCD hard scattering Stefano Catani, Leandro Cieri, Dimitri Colferai and Francesco Coradeschi Eur. Phys. J. C, 83 1 (2023) 38 Published online: 19 January 2023 DOI: 10.1140/epjc/s10052-022-11141-y