experimental results on the ω- and η′-nucleus potential - on the way to mesic states
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ID: 208349
2015
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Abstract
Different experimental approaches to determine the meson-nucleus optical potential are discussed. The experiments have been performed with the Crystal Barrel/TAPS detector system at the ELSA accelerator in Bonn and the Crystal Ball/TAPS at the MAMI accelerator in Mainz. Experimental results about the real and imaginary part of the η′- and ω-nucleus optical potential are presented. The imaginary part of the meson-nucleus optical potential is determined from the in-medium width of the meson by the measurement of the transparency ratio. Information on the real part of the optical potential is deduced from measurements of the excitation function and momentum distribution which are sensitive to the sign and depth of the potential. The results are discussed and compared to theoretical predictions. The data for both mesons are consistent with a weakly attractive potential. The formation and population of ω-nucleus and η′-nucleus bound states is additionally discussed.
| Reference Key |
mariana2015epjexperimental
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| Authors | ;Nanova Mariana |
| Journal | utilitas mathematica |
| Year | 2015 |
| DOI |
10.1051/epjconf/20159700022
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