Investigation of the low energy kaons hadronic interactions in light nuclei by AMADEUS
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- Piscicchia, K., Bazzi, M., Berucci, C. et al. Hyperfine Interact (2015) 234: 9. doi:10.1007/s10751-015-1185-1
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The AMADEUS experiment aims to provide unique quality data for K− interaction with nucleons and light nuclei, both at-rest and in-flight (for K− momenta of about 100 MeV). The goal is to solve longstanding open issues in the non-perturbative QCD in the strangeness sector, like the nature of the Λ(1405) state, the resonant versus non-resonant yield in nuclear K− capture and the properties of kaonic nuclear clusters which are strongly related to the multi-nucleon absorption processes. We can take advantage of the DA ΦNE collider representing a unique source of monochromatic low-momentum kaons, whose nuclear interaction with the materials of the KLOE detector (used as an active target) furnish us excellent acceptance and resolution data for K− capture on H, 4He, 9Be and 12C, both at-rest and in-flight. AMADEUS step 0 consisted in the analysis of the 2004-2005 KLOE data. A second step consisted in the implementation in the central region of the KLOE detector of a pure graphite target, providing a high statistic sample of K−12C nuclear captures at rest. For the future, new setups for various dedicated targets are under preparation.