Köln 2025 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HK: Fachverband Physik der Hadronen und Kerne

HK 15: Hadron Structure and Spectroscopy I

HK 15.1: Gruppenbericht

Dienstag, 11. März 2025, 14:00–14:30, HS 3 Physik

The CBELSA/TAPS experiment: Recent results and future plans — •Tobias Seifen for the CBELSA/TAPS collaboration — Helmholtz-Institut für Strahlen- und Kernphysik, Nussallee 14-16, 53115 Bonn

One important step in understanding the baryon spectrum is a precise knowledge of the excited states and their decays. In order to extract the contributing resonances from experimental data a partial wave analysis needs to be performed. To resolve ambiguities, the measurement of polarization observables is indispensable.

The CBELSA/TAPS experiment is ideally suited to measure the photoproduction of neutral mesons decaying into photons due to its good energy resolution, high detection efficiency for photons, and the nearly complete solid angle coverage. In combination with a longitudinally or transversely polarized target and an energy tagged, linearly or circularly polarized photon beam the experiment allows the measurement of a large set of polarization observables.

In addition to recent results from the CBELSA/TAPS experiment, this talk will discuss a new experiment, INSIGHT at ELSA, which will reuse the CB calorimeter, complemented by several new detector systems: a pixel detector surrounding the target and a forward spectrometer consisting of GEMs, a dipole magnet, straw tubes and the PANDA Forward-Endcap calorimeter. This setup will combine high resolution photon measurements with precise charged particle detection over nearly the entire solid angle and extend the measurements of polarization observables e.g. into the strangeness sector.

Keywords: photoproduction; polarization observables