Gluonia enhancements of the Higgs boson hadronic widths

Abstract

We use scalar gluonia dominance of the anomalous trace of the energy-momentum tensor and some results from QCD low-energy theorems and spectral sum rules in order to analyze the hadronic and γγ widths of a light Higgs boson of the standard model with a mass below the charm threshold. Large enhancements of the ππ and ηη′ modes occur respectively on the top of the σ(0.9) and G(1.6) poles, while the γγ width can be important around the G mass. Consequently, the Higgs into μ + μ − branching ratio, which is about 10 −2 on these gluonia poles, is much smaller nthan naively expected. Values of these various widths versus the Higgs boson mass are given. A search for the Higgs boson from the study of the ππ and η′η invariant masses could be feasible.