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 forward region is ideally suited for investigating low momentum transfer processes, in particular in strangeness photoproduction.The associated photoproduction of K-S(0) and hyperons is essential to understand the role of K* exchange mechanisms. A cusp-like structure observed in the gamma p -> K-S(0)Sigma(+) reaction at the K* threshold is described by models including dynamically generated resonances from vector meson-baryon interactions. Such interactions are predicted to give a peak like structure in K-S(0)Sigma(0) photoproduction off the neutron. A very preliminary cross section is determined and compared to the prediction, the results appear to support the model.

Kohl, K., Alef, S., Bauer, P., Beck, R., Braghieri, A., Cole, P., et al. (2020). K0SΣ0 photoproduction at the BGO-OD experiment. EPJ WEB OF CONFERENCES, 241 [10.1051/epjconf/202024101009].

K0SΣ0 photoproduction at the BGO-OD experiment

Fantini, Alessia;Lapik, Alexander;Messi, Roberto;
2020-09-22

Abstract

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 forward region is ideally suited for investigating low momentum transfer processes, in particular in strangeness photoproduction.The associated photoproduction of K-S(0) and hyperons is essential to understand the role of K* exchange mechanisms. A cusp-like structure observed in the gamma p -> K-S(0)Sigma(+) reaction at the K* threshold is described by models including dynamically generated resonances from vector meson-baryon interactions. Such interactions are predicted to give a peak like structure in K-S(0)Sigma(0) photoproduction off the neutron. A very preliminary cross section is determined and compared to the prediction, the results appear to support the model.
22-set-2020
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Kohl, K., Alef, S., Bauer, P., Beck, R., Braghieri, A., Cole, P., et al. (2020). K0SΣ0 photoproduction at the BGO-OD experiment. EPJ WEB OF CONFERENCES, 241 [10.1051/epjconf/202024101009].
Kohl, K; Alef, S; Bauer, P; Beck, R; Braghieri, A; Cole, P; Di Salvo, R; Elsner, D; Fantini, A; Freyermuth, O; Oliver, F; Gridnev, A; Hammann, D; Hann...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/275655
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