2014/11/14 by Martin Beneke, Diogo Boito, Beneke, Martin +3
Mathematics · Physics and Astronomy · #Asymmetry #Combinatorics #Cosmology and Gravitation Theories #Coupling (piping) #Dimension (graph theory) #Electron #FOS: Physical sciences #Higgs boson #High Energy Physics - Phenomenology (hep-ph) #Invariant (physics) #Invariant mass #Lagrangian #Lepton #Mathematical physics #Mathematics #Neutrino Physics Research #Nuclear physics #Observable #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum mechanics #hep-ph
paper · pdf · doi:10.48550/arxiv.1411.3942
6 pages, 4 figures. Contribution to the Proceedings of the 37th International Conference on High Energy Physics (ICHEP 2014), 2-9 July 2014, Valencia, Spain
arxiv created 2014/11/14 · openalex publication_date 2014/11/14 · arxiv updated 2014/11/17 · openalex created_date 2018/02/23 · openalex updated_date 2026/08/06
Parametrizing beyond Standard Model physics by the SU(3) x SU(2)L x 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 HZgamma 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.