k λ 1405 photoproduction at the bgo od experiment

• DOI: 10.48550/arxiv.2007.08898
• Publication Date: 2020-01-01
• Authors: A. Polonski; Alessandro Braghieri; Alessandro Braghieri; A. M. Lapik; Giuseppe Mandaglio; D. Hammann; G. Scheluchin; Mariia Romaniuk; J. Hannappel; S. Alef; V. Tarakanov; K. Kohl; R. Messi; Patrick Bauer; A. Fantini; T. C. Jude; F. Ghio; F. Ghio; Rachele Di Salvo; Valery Lisin; V. V. Sumachev; V. G. Nedorezov; Paolo Levi Sandri; Christian Tillmanns; O. Freyermuth; Reinhard Beck; H. Schmieden; D. Elsner; A. B. Gridnev; B.-E. Reitz; Dario Moricciani; Philip Cole; N. G. Kozlenko; P. Pedroni; D. V. Novinsky
• Keywords: Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE; Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni; Physics; QC1-999; 0103 physical sciences; FOS: Physical sciences; Nuclear Experiment (nucl-ex); 530; 01 natural sciences; 7. Clean energy

Since the discovery of the Λ(1405), it remains poorly described by conventional constituent quark models, and it is a candidate for having an “exotic” meson-baryon or “penta-quark” structure, similar to states recently reported in the hidden charm sector.The Λ(1405) can be produced in the reactionγpK+Λ(1405). The pure I=0 decay mode into Σ0π0is prohibited for the mass-overlapping Σ(1385). Combining a large aperture forward magnetic spectrometer and a central BGO crystal calorimeter, the BGO-OD experiment is ideally suited to measure this decay with theK+in the forward direction. Preliminary results are presented.*Supported by DFG (PN 388979758, 405882627)