2008/02/04 by H. Nagahiro, Hideko Nagahiro, L. Roca +1 · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Pseudoscalar #Pseudoscalar meson #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Radiative transfer #Scalar (mathematics) #Vector meson dominance #hep-ph
paper · pdf · doi:10.1140/epja/i2008-10567-8
arxiv created 2008/02/04 · openalex publication_date 2008/04/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We calculate the radiative decay widths of the a0(980) and f0(980) scalar mesons into ργ and ωγ considering the dynamically generated nature of these scalar resonances within the realm of the Chiral Unitary Approach. The main ingredient in the evaluation of the radiative width of the scalar mesons are the loops coming from the decay into their constituent pseudoscalar-pseudoscalar components and the subsequent radiation of the photon. The dominant diagrams with only pseudoscalar mesons in the loops are found to be convergent while the divergence of those with a vector meson in the loop are written in terms of the two meson loop function easily regularizable. We provide results for all the possible charge channels and obtain results, with uncertainties, which differ significantly from quark loops models and some version of vector meson dominance.