2014/09/12 by A. Cordero-Cid, Cordero-Cid, A., M. A. López-Osorio +5
Physics and Astronomy · #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.1409.3889
4 pages, 1 figure
arxiv created 2014/09/12 · arxiv updated 2014/09/16
The Z→ γγ and H→ γγγ decays are strictly forbidden in the Standard Model, but they can be induced by theories that violate Lorentz symmetry or the CPT theorem. By assuming that a nonvanishing Zγγ vertex is induced in some context of new physics, and by analyzing the reaction H→ γZ^*→ γγγ in the Z resonance, we obtain an estimation for the branching ratio of the H→ γγγ decay. Specifically, it is found that BR(H→ γγγ)\lesssim BR(H→ γZ)BRExp(Z→ γγ), which is of the order of 10-7.