Abstract
Investigation of the low-energy kaons hadronic interactions in light nuclei by AMADEUS
Highlights
The AMADEUS (Anti-kaonic Matter At DAΦNE: An Experiment with Unraveling Spectroscopy) [1] experiment investigates the low-energy K− hadronic interaction in light nuclei (e.g. H, 4He, 9Be and 12C) in order to provide experimental constraints on the non-perturbative QCD in the strangeness sector
AMADEUS takes advantage of the low momentum, almost monochromatic, charged kaons provided by the decay of φ mesons at-rest at the DAΦNE factory [2]
A key issue, which is addressed in the analyses described below, is the search for a high mass pole of the Λ(1405), exploiting in-flight K− capture in light nuclear targets [15, 16] and the investigation of the corresponding non-resonant background
Summary
The AMADEUS (Anti-kaonic Matter At DAΦNE: An Experiment with Unraveling Spectroscopy) [1] experiment investigates the low-energy K− hadronic interaction in light nuclei (e.g. H, 4He, 9Be and 12C) in order to provide experimental constraints on the non-perturbative QCD in the strangeness sector. For the di-baryonic kaonic bound state ppK− theoretical predictions deliver a wide range of binding energies and widths [7] while the experimental results are contradictory [8,9,10,11,12,13,14]. The shape of the Λ(1405) state produced in K−p absorption on bound protons, is distorted by the binding energy of the proton, as well as by the non-resonant (Σπ)0 production below threshold.
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