| Autor: |
Gotta, D., Amaro, F., Anagnostopoulos, D., Bühler, P., Gorke, H., Covita, D., Fuhrmann, H., Gruber, A., Hennebach, M., Hirtl, A., Ishiwatari, T., Indelicato, P., Jensen, T., Bigot, E.-O., Markushin, V., Marton, J., Nekipelov, M., Pomerantsev, V., Popov, V., dos Santos, J. |
| Předmět: |
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| Zdroj: |
Hyperfine Interactions; Aug2015, Vol. 234 Issue 1-3, p105-111, 7p |
| Abstrakt: |
Pion-nucleon scattering lengths are directly related to the ground-state level shift and broadening in pionic hydrogen as well as to the pionic deuterium level shift. The level broadening in deuterium measures the strength of pion threshold-production in proton-proton reactions. However, collisional processes during the atomic de-excitation cascade considerably complicate the analysis of X-ray line shapes in order to extract the hadronic broadening. Therefore, additionally the purely electromagnetic twin system muonic hydrogen was studied. Results of these experiments performed at PSI by using a high-resolution crystal spectrometer are discussed in the context with a new analysis approach for the hadronic broadening. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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