https://doi.org/10.1051/epjconf/202024101014
K+Λ(1405) 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, 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
* e-mail: scheluchin@physik.uni-bonn.de
Published online: 22 September 2020
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 reaction γp K+Λ(1405). The pure I=0 decay mode into Σ0π0 is 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 the K+ in the forward direction. Preliminary results are presented.
*Supported by DFG (PN 388979758, 405882627)
© The Authors, published by EDP Sciences, 2020
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