Pseudo-observables in Higgs decays Martín González-Alonso, Admir Greljo, Gino Isidori and David Marzocca Eur. Phys. J. C, 75 3 (2015) 128 Published online: 20 March 2015 DOI: 10.1140/epjc/s10052-015-3345-5