https://doi.org/10.1051/epjconf/202024101009
K0SΣ0 photoproduction at the BGO-OD experiment
1 Rheinische Friedrich-Willhelms-Universität Bonn, Physikalisches Institut, Nußallee 12, 53115 Bonn Germany
2 Helmholtz-Institut fuer Strahlen- und Kernphysik, Universitaet Bonn, Nussallee 1-16, D-53115 Bonn Germany
3 Lamar University, Department of Physics, Beaumont, Texas, 77710 USA
4 INFN Roma Tor Vergata, Rome, Italy
5 Università di Roma "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy
6 INFN sezione di Roma La Sapienza, P.le Aldo Moro 2, 00185 Rome, Italy
7 Istituto Superiore di Sanita, Viale Regina Elena 299, 00161 Rome, Italy
8 Petersburg Nuclear Physics Institute, Gatchina, Leningrad District, 188300 Russia
9 Russian Academy of Sciences Institute for Nuclear Research, prospekt 60-letiya Oktyabrya 7a, Moscow, 117312 Russia
10 INFN - Laboratori Nazionali di Frascati, Via E. Fermi 40, 00044 Frascati, Italy
11 INFN sezione Catania, 95129 Catania, Italy
12 Universita degli Studi di Messina, Via Consolato del Mare 41, 98121 Messina, Italy
13 INFN sezione di Pavia, Via Agostino Bassi, 6 - 27100 Pavia, Italy
* Corresponding author: kohl@physik.uni-bonn.de
Published online: 22 September 2020
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 K0S and hyperons is essential to understand the role of K* exchange mech anisms. A cusp-like structure observed in the yp → K0SΣ+ 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 K0SΣ0 photoproduction off the neutron. A very preliminary cross section is determined and compared to the prediction, the results appear to support the model
© The Authors, published by EDP Sciences, 2020
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