TY - JOUR
T1 - Signatures of anomalous Higgs couplings in angular asymmetries of H→Zℓ+ℓ- and e+e-→HZ
AU - Beneke, M.
AU - Boito, D.
AU - Wang, Y. M.
N1 - Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2016/4/1
Y1 - 2016/4/1
N2 - Parametrizing beyond Standard Model physics by the SU(3)×SU(2)L×U(1)Y dimension-six effective lagrangian, we study the impact of anomalous Higgs couplings 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 show that some asymmetries can reveal BSM effects that would otherwise be hidden in other observables. The d=6 HZγ couplings as well as (to a lesser extent) HZℓℓ contact interactions can generate asymmetries at the several percent level, albeit having less significant effects on the di-lepton invariant mass spectrum of the decay H→Zℓ+ℓ-. The higher di-lepton invariant mass probed in e+e-→HZ can lead to complementary anomalous coupling searches at e+e- colliders.
AB - Parametrizing beyond Standard Model physics by the SU(3)×SU(2)L×U(1)Y dimension-six effective lagrangian, we study the impact of anomalous Higgs couplings 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 show that some asymmetries can reveal BSM effects that would otherwise be hidden in other observables. The d=6 HZγ couplings as well as (to a lesser extent) HZℓℓ contact interactions can generate asymmetries at the several percent level, albeit having less significant effects on the di-lepton invariant mass spectrum of the decay H→Zℓ+ℓ-. The higher di-lepton invariant mass probed in e+e-→HZ can lead to complementary anomalous coupling searches at e+e- colliders.
KW - Beyond Standard Model physics
KW - Dimension-six effective Lagrangian
KW - Higgs physics
UR - http://www.scopus.com/inward/record.url?scp=84973163638&partnerID=8YFLogxK
U2 - 10.1016/j.nuclphysbps.2015.09.130
DO - 10.1016/j.nuclphysbps.2015.09.130
M3 - Article
AN - SCOPUS:84973163638
SN - 2405-6014
VL - 273-275
SP - 846
EP - 851
JO - Nuclear and Particle Physics Proceedings
JF - Nuclear and Particle Physics Proceedings
ER -