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Parametrizing beyond Standard Model physics by the SU(3) x SU(2)_L x U(1)_Ydimension-six effective Lagrangian, we study the impact of anomalous Higgscouplings in angular asymmetries of the crossing-symmetric processes H -->Zl+l- and e+e- --> HZ. In the light of present bounds on d=6 couplings, we showthat some asymmetries can reveal BSM effects that would otherwise be hidden inother observables. The d=6 HZgamma couplings as well as (to a lesser extent)HZll contact interactions can generate asymmetries at the several percentlevel, albeit having less significant effects on the di-lepton invariant massspectrum of the decay H --> Zl+l-. The higher di-lepton invariant mass probedin e+e- --> HZ can lead to complementary anomalous coupling searches at e+e-colliders.

Signatures of anomalous Higgs couplings in angular asymmetries of H --> Zl+l- and e+e- --> HZ