München 2019 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 54: Poster

HK 54.66: Poster

Donnerstag, 21. März 2019, 16:30–19:00, Foyer Theresanium

Performance of the BGO-OD experiment at ELSA* — •Björn-Eric Reitz for the BGO-OD collaboration — Physikalisches Institut, Universität Bonn

Since many years meson photoproduction has been used to explore the excitation structure of the nucleon and the degrees of freedom involved. With the pentaquark baryon candidates and the XYZ mesons recently discovered in the charmed quark sector, the question arises whether similar structures are present in the lighter strange quark sector as well. To investigate this issue experimentally, it is crucial to have access to a region of low momentum exchange with the baryonic final states.
The BGO-OD experiment at the ELSA accelerator facility of the University of Bonn is ideally suited for such experiments. It allows photoproduction of forward going kaons with ground or excited state hyperons remaining with little momentum transfer. Non-strange reaction channels can be explored detecting forward going protons, e.g. in η photoproduction. The experiment is comprised of a forward magnetic spectrometer combined with a central crystal calorimeter.
This poster will present an overview of the general detector performance together with preliminary results of various analyses.

*Supported by DFG (PN 50165297).

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