Speaker
Description
Radiative transition of an excited baryon to a nucleon with emission of a virtual massive photon converting to dielectron pair (Dalitz decays) provides important information about baryon-photon coupling at low q2 in timelike region. These measurements are complementary to time like e+e- annihilation experiments at larger q2 value and meson production with electron and photon beams covering space like region. In this talk an extension of the HADES programme on non-strange baryons (see B. Ramstein) for Hyperons will be presented. Perspective for Dalitz decays of L(1520)/S(1385)->Lambda e+e- in high statistical run with p+p at 4.5 GeV will be given. Furthermore, results for L(1520)->Lambda pi+pi decay from p+p at 3.5 GeV will be given. They provide valuable constraints on isospin=0/1 contribution to Dalitz decay.
| speaker affiliation | Jagiellonian University |
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