2001/04/30 by Fulvia De Fazio, F. De Fazio, M. R. Pennington
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/s0370-2693(01)01200-x
published as Phys.Lett.B521:15-21,2001 · Latex, 11 pages, 2 eps figures. Final version to apper in Physics Letters B
arxiv created 2001/06/11 · openalex publication_date 2001/11/01 · arxiv updated 2010/05/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We consider the radiative transition ϕ→ f0 γ, which is a sensitive probe of the nature of the f0(980) particle. Using the QCD sum-rule technique, we estimate the branching ratio of such decay mode to be: \cal B(ϕ→ f0 γ)=(2.7 ± 1.1) ~ 10-4, in fair agreement with present experimental data. As for the structure of the f0, the result suggests a sizeable s s component; however, this result does not exclude the possibility of further components and allows a more complex structure than indicated by the naive quark model.