Details

Autor(en) / Beteiligte

• Jude, Thomas
• Alef, Stefan
• Bauer, Patrick
• Beck, Reinhard
• Braghieri, Alessandro
• Cole, Philip
• Di Salvo, Rachele
• Elsner, Daniel
• Fantini, Alessia
• Freyermuth, Oliver
• Ghio, Francesco
• Gridnev, Anatoly
• Hammann, Daniel
• Hannappel, Jürgen
• Kohl, Katrin
• 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
• Beck, R.
• Thiel, A.
• Thoma, U.
• Wunderlich, Y.

Titel

Strangeness Photoproduction at the BGO-OD experiment

Ist Teil von

• EPJ Web of Conferences, 2020-01, Vol.241, p.1008

Ort / Verlag

Les Ulis: EDP Sciences

Erscheinungsjahr

2020

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The BGO-OD experiment at the ELSA accelerator facility uses an energy tagged bremsstrahlung photon beam to investigate the excitation structure of the nucleon. The setup consists of a highly segmented BGO calorimeter surrounding the target, with a particle tracking magnetic spectrometer at forward angles. BGO-OD is ideal for investigating low momentum transfer processes due to the acceptance and high momentum resolution at forward angles. In particular, this enables the investigation of strangeness photoproduction where t-channel exchange mechanisms play an important role. This also allows access to low momentum exchange kinematics where extended, molecular structure may manifest in reaction mechanisms. First key results at low t indicate a cusp-like structure in K + Σ 0 photoproduction at W = 1900 MeV, line shapes and differential cross sections for K + Λ(1405)→ K + Σ 0 π 0 , and a peak structure in K 0 S Σ 0 photoproduction. The peak in the K 0 S Σ 0 channel appears consistent with meson-baryon generated states, where equivalent models have been used to describe the P C pentaquark candidates in the heavy charmed quark sector.