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Hyperfine Interactions

, Volume 234, Issue 1–3, pp 25–31 | Cite as

Determining the meson-nucleus potential - on the way to mesic states

  • Volker MetagEmail author
Article

Abstract

Experimental approaches to determine the real and imaginary part of the meson-nucleus potential are described. The experiments have been performed with the Crystal Barrel/TAPS detector at the electron accelerator ELSA (Bonn) and the Crystal Ball/TAPS detector at MAMI (Mainz). Measuring the transparency ratio as well as the excitation function and momentum distribution for photo production of ω and η′ mesons, the imaginary part of the η′-nucleus potential is found to be smaller than the real part. In case of the ω meson the opposite is observed. This makes the η′ meson a good candidate for the search for meson-nucleus bound states while no resolved ω mesic states can be expected. The results are discussed and compared to theoretical predictions. An outlook on future experiments is given.

Keywords

Meson-nucleus interaction Mesic states 

Mathematics Subject Classification (2010)

21.85.+d 25.20.-x 

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.II. Physikalisches InstitutUniversität GiessenGiessenGermany

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