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Observation of a narrow resonance near the p threshold |
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| Authors: | W. Brückner B. Granz D. Ingham K. Kilian U. Lynen J. Niewisch B. Pietrzyk B. Povh H.G. Ritter H. Schröder |
| Affiliation: | 1. Max-Planck-Institut für Kernphysik, Heidelberg, Germany;2. Physikalisches Institut der Universität Heidelberg, Germany;3. CERN, Geneva, Switzerland |
| Abstract: | Annihilation and elastic cross-sections of p have been measured between 400 and 850 MeV/c. In both cross-sections a resonance is observed at a mass of 1939 ± 3 MeV. For its natural width τ ? 4 MeV is obtained. |
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