Higgs Boson Production and Decay: Dalitz Sector

Understand

The processes involving a Higgs boson, a photon(gluon) and a fermion pair pose severe challenges to the experimental analysis.

• They represent rare decays and production mechanisms of the Higgs boson at LHC.
• However, they are not Yukawa suppressed at next-to-leading order opening a window for the correct definition of pseudo-observables, e.g.
• a definition of the Higgs decay width into Z + photon with universal inherent meaning, that are currently used in extracting information for the couplings of the newly discovered resonance at LHC.