Production and electromagnetic decay of hyperons: a feasibility study with HADES as a phase-0 experiment at FAIR

International audienceA feasibility study has been performed in order to investigate the performance of the HADES  detector to measure the electromagnetic decays of the hyperon resonances $\Sigma (1385)^{0}$,  $\Lambda (1405)$  and $\Lambda (1520)$  as well as the production of double strange baryon systems $\Xi ^{-}$ and $\Lambda \Lambda$ in p + p reactions at a beam kinetic energy of $4.5\,{\mathrm{GeV}}$. The existing HADES  detector will be upgraded by a new Forward Detector, which extends the detector acceptance into a range of polar angles that plays a crucial role for these investigations. The analysis of each channel is preceded by a consideration of the production cross-sections. Afterwards the expected signal count rates using a target consisting of either liquid hydrogen or polyethylene are summarized