Novel subjet observables for jet quenching in heavy-ion collisions Liliana Apolinário, José Guilherme Milhano, Mateusz Ploskon and Xiaoming Zhang Eur. Phys. J. C, 78 6 (2018) 529 Published online: 28 June 2018 DOI: 10.1140/epjc/s10052-018-5999-2