Bonn 2020 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 14: Hadron Structure and Spectroscopy IV

HK 14.3: Vortrag

Dienstag, 31. März 2020, 17:45–18:00, J-HS M

K+ Σ Photoproduction at the BGO-OD Experiment — •Johannes Groß — Physikalisches Institut Universität Bonn

The BGO-OD experiment at the ELSA accelerator facility uses an energy-tagged bremsstrahlung photon beam to investigate the excitation spectra of the nucleon. The setup consists of a highly segmented BGO calorimeter surrounding the target, with a particle tracking magnetic spectrometer at forward angles.
This unique combination is ideal for investigating low momentum transfer processes due to the acceptance and high momentum resolution at forward angles. The K+ detection in the forward spectrometer is complemented by a technique to identify K+ mesons in the central calorimeter via the time delayed weak decay, vastly increasing the angular acceptance for final states of open and hidden strangeness.
Preliminary, high statistics cross section and beam asymmetry measurements for the reaction γ nK+ Σ will be presented.

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