Extended Data Fig. 3: Feynman diagram for the \({{{{{\rm{q}}}}}}\overline{{{{{{\rm{q}}}}}}}\to {{{{{\rm{Z}}}}}}{{{{{\rm{Z}}}}}}\) and \({{{{{\rm{q}}}}}}\overline{{{{{{\rm{q}}}}}}}^{\prime} \to {{{{{\rm{W}}}}}}{{{{{\rm{Z}}}}}}\) processes.
From: Measurement of the Higgs boson width and evidence of its off-shell contributions to ZZ production
Both processes are represented at tree level with a single diagram. These two processes constitute the major irreducible, noninterfering background contributions in the off-shell region. The interaction displayed in each diagram is meant to progress from left to right. Each straight, curvy, or curly line refers to the different set of particles denoted. Straight, solid lines with no arrows indicate the line could refer to either a particle or an antiparticle, whereas those with forward (backward) arrows refer to a particle (an antiparticle).
