SMuK 2023 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 48: Hadron Structure and Spectroscopy V
HK 48.3: Vortrag
Mittwoch, 22. März 2023, 18:00–18:15, SCH/A316
Luminosity Determination for the FAIR Phase-0 Beamtime to Study Hyperon Production with HADES — •Gabriela Perez Andrade1,2, James Ritman1,2, and Peter Wintz2 for the HADES collaboration — 1GSI, Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany — 2Wilhelm-Johnen-Straße, 52428 Jülich
New data on hyperon production have been measured with the upgraded HADES Spectrometer, including the new Forward Detector components (FD). These measurements used a proton beam of 4.5 GeV kinetic energy impinging onto a fixed liquid hydrogen target. Proton-proton elastic scattering with one proton going in the FD (3∘< θFD <6∘) and the other proton in the main HADES acceptance (70∘<θH<79∘) has a high differential cross-section. This reaction is used to calibrate the FD and determine the integrated luminosity. Event selection is based on the kinematic observables, and the integrated luminosity is calculated considering the elastics yield, the elastic scattering cross-section interpolated from measurements in other experiments, and a correction factor that accounts for the reconstruction efficiency in the FD. Preliminary results of the integrated luminosity for the beamtime will be presented in this talk.