2018/07/31 by Sally Dawson, S. Dawson, Pier Paolo Giardino
Mathematics · Physics and Astronomy · #Algorithm #Effective field theory #Electroweak interaction #Electroweak scale #Gauge (firearms) #Higgs boson #Mathematics #Neutrino Physics Research #Parameterized complexity #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #Standard Model (mathematical formulation) #hep-ph
paper · pdf · doi:10.1103/physrevd.98.095005
published as Phys. Rev. D 98, 095005 (2018) · 21 pages, 3 figures; V2: Version accepted for publication
openalex created_date 2018/08/22 · openalex publication_date 2018/11/05 · arxiv created 2018/11/22 · arxiv updated 2018/11/26 · openalex updated_date 2026/08/05
Higgs decays to gauge boson pairs are a crucial ingredient in the study of Higgs properties, with the decay H\ensuremath→\ensuremathγ\ensuremathγ being particularly sensitive to new physics effects. Assuming all potential new physics occurs at energies far above the weak scale, deviations from standard model predictions can be parametrized in terms of the coefficients of a standard model effective field theory (SMEFT). When experimental limits on the SMEFT coefficients reach an accuracy of a few percent, predictions must be done beyond the lowest order in the SMEFT in order to match theory and experimental accuracy. This paper completes a program of computing the one-loop electroweak SMEFT corrections to H\ensuremath→VV^\ensuremath', V=W^\ifmmode±\else\textpm\fi, Z, \ensuremathγ. The calculation of the real contribution to H\ensuremath→W+W^\ensuremath-\ensuremathγ is performed by mapping two-loop amplitudes to the three-body phase space.