1. $K^+\Lambda$(1405) photoproduction at the BGO-OD experiment
- Author
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Scheluchin, Georg, 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, Jude, Thomas, Kohl, Katrin, Kozlenko, Nikolay, Lapik, Alexander, Sandri, Paolo Levi, Lisin, Valery, Mandaglio, Giuseppe, Messi, Roberto, Moricciani, Dario, Nedorezov, Vladimir, Novinsky, Dmitry, Pedroni, Paolo, Polonski, Andrei, Reitz, Björn-Eric, Romaniuk, Mariia, Schmieden, Hartmut, Sumachev, Victorin, Tarakanov, Viacheslav, and Tillmanns, Christian
- Subjects
High Energy Physics::Phenomenology ,High Energy Physics::Experiment ,Nuclear Experiment - Abstract
Since the discovery of the $\Lambda(1405)$, 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 $\Lambda(1405)$ can be produced in the reaction $\gamma p \rightarrow K^+\Lambda(1405)$. The pure I=0 decay mode into $\Sigma^0\pi^0$ is prohibited for the mass-overlapping $\Sigma(1385)$. 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 the $K^+$ in the forward direction. Preliminary results are presented. *Supported by DFG (PN 388979758, 405882627)., Comment: Contribution to the proceedings of "NSTAR2019: 12th International Workshop on the Physics of Excited Nucleons"
- Published
- 2020