K 0 S Σ 0 photoproduction at the BGO-OD experiment

• Published in: EPJ Web of conferences Vol. 241; p. 1009
• Main Authors: Kohl, Katrin, Alef, Stefan, Bauer, Patrick, Beck, Reinhard, Braghieri, Alessandro, Cole, Philip, Di Salvo, Rachele, Elsner, Daniel, Fantini, Alessia, Freyermuth, Oliver, Oliver, Francesco, Gridnev, Anatoly, Hammann, Daniel, Hannappel, Jürgen, Jude, Thomas, Kozlenko, Nikolay, Lapik, Alexander, Levi Sandri, Paolo, Lisin, Valery, Mandaglio, Giuseppe, Messi, Roberto, Moricciani, Dario, Nedorezov, Vladimir, Novinsky, Dmitry, Pedroni, Paolo, Polonski, Andrei, Reitz, Björn-Eric, Romaniuk, Mariia, Scheluchin, Georg, Schmieden, Hartmut, Sumachev, Victorin, Tarakanov, Viacheslav, Tillmanns, Christian
• Format: Journal Article
• Language: English
• Published: 2020
• ISSN: 2100-014X; 2100-014X
• DOI: 10.1051/epjconf/202024101009

The BGO-OD experiment at the ELSA accelerator facility uses an energy tagged bremsstrahlung photon beam to investigate the excitation structure of the nucleon via meson photoproduction.
The setup with a BGO calorimeter surrounding the target and an open dipole spectrometer covering the for ward region is ideally suited for investigating low momentum transfer processes, in particular in strangeness photoproduction.
The associated photoproduction of
K
0
S
and hyperons is essential to understand the role of
K
*
exchange mech anisms. A cusp-like structure observed in the
yp → K
0
S
Σ
+
reaction at the
K
*
threshold is described by models including dynamically generated resonances from vector meson-baryon interactions. Such interactions are pre dicted to give a peak like structure in
K
0
S
Σ
0
photoproduction off the neutron. A very preliminary cross section is determined and compared to the prediction, the results appear to support the model