2017/02/28 by G. Degrassi, Giuseppe Degrassi, Marco Fedele +1
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Boson #Coupling (piping) #Gauge (firearms) #Geometry #Higgs boson #Higgs field #Mathematics #Neutrino Physics Research #Observable #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum mechanics #Scalar (mathematics) #Standard Model (mathematical formulation) #hep-ph
paper · pdf · doi:10.1007/jhep04(2017)155
published as JHEP 1704, 155 (2017) · 23 pages, 4 figures; V2: References added, version published on JHEP
openalex publication_date 2017/04/01 · arxiv created 2017/05/04 · arxiv updated 2017/05/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present the constraints on the trilinear Higgs self coupling that arise from loop effects in the W boson mass and the effective sine predictions. We compute the contributions to these precision observables of two-loop diagrams featuring an anomalous trilinear Higgs self coupling. We explicitly show that the same anomalous contributions are found if the analysis of m W and sin2 θ eff lep is performed in a theory in which the scalar potential in the Standard Model Lagrangian is modified by an (in)finite tower of (Φ†Φ) n terms with Φ the Higgs doublet. We find that the bounds on the trilinear Higgs self coupling from precision observables are competitive with those coming from Higgs pair production.