München 2019 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 3: Hadron Structure and Spectroscopy I

HK 3.5: Talk

Monday, March 18, 2019, 15:30–15:45, HS 13

Electromagnetic Transition Form Factors of the η and ω Mesons — •Susan Schadmand — Forschungszentrum Jülich

Electromagnetic transition form factors are determined via meson decays into final states with dileptons. Form factors are evaluated as a function of the momentum transfer which is identical to the invariant mass of the dileptons. The results provide basic knowledge of the structure of hadrons and address the validity of vector meson dominance. The transition form factors are of special interest on account of the impact on the interpretation of the g-2 measurements. Here, light-by-light scattering is an important factor. The talk will include experimental results from the experiments WASA at COSY and CLAS at Jefferson Lab.