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Precision measurements of kaonic atoms at DA ΦNE and future perspectives


The DAΦNE electron-positron collider at the Frascati National Laboratories has made available a unique “beam" of negative kaons providing unprecedented conditions for the study of the low-energy kaon-nucleon interaction, a field still largely unexplored. The DEAR (DAΦNE Exotic Atom Research) experiment at DAΦNE and its successor SIDDHARTA (SIlicon Drift Detector for Hadronic Atom Research by Timing Application) aim at a precision measurement of the strong-interaction shift and width of the fundamental 1s level, via the measurement of the X-ray transitions to this level, for kaonic hydrogen and kaonic deuterium. The aim is to extract the isospin-dependent antikaon-nucleon scattering lengths and to contribute to the understanding of aspects of chiral symmetry breaking in the strangeness sector.

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Curceanu (Petrascu), C., Bazzi, M., Beer, G. et al. Precision measurements of kaonic atoms at DA ΦNE and future perspectives. Eur. Phys. J. A 31, 537–539 (2007).

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  • 36.10.-k Exotic atoms and molecules (containing mesons, muons, and other unusual particles)
  • 13.75.Jz Kaon-baryon interactions
  • 29.30.Kv X- and γ-ray spectroscopy