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Search: WFRF:(Raich U.) > (1984)

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1.
  • Adiels, L., et al. (author)
  • Pi0 and eta spectra from proton-antiproton annihilations at rest
  • 1984
  • In: Zeitschrift für Physik. C, Particles and fields. - 0170-9739. ; 21:4, s. 315-319
  • Journal article (peer-reviewed)abstract
    • The low-energy part of the Ï€0 spectrum associated with Mathematical expression annihilation at rest was measured in order to search for bound baryonium-like states. The upper limit for reaching such states via the emission of monochromatic Ï€0’s was found to be 8% per annihilation in the mass region of 1650 MeV. The low-energy part of the η spectrum from Mathematical expression annihilations at rest was also observed.
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2.
  • Adiels, L., et al. (author)
  • Search for narrow exotic states in annihilations on 4He
  • 1984
  • In: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 138:1-3, s. 235-240
  • Journal article (peer-reviewed)abstract
    • After having found evidence for narrow exotic states in p annihilation, the production of such states on a nuclear target was studied with similar techniques. The γ spectrum associated with annihilation on 4He at rest was measured. The spectrum shows two peaks, at energies of 161.9 and 203.0 MeV, corresponding to intermediate narrow states of masses which seem to be related to states found in p annihilations. The confidence is better than 4 σ.
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3.
  • Guigas, R., et al. (author)
  • Strong interaction effects in antiprotonic 6Li/7Li atoms
  • 1984
  • In: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 137:56, s. 323-328
  • Journal article (peer-reviewed)abstract
    • The effects of strong interaction on the 3 –> 2 X-ray transition in antiprotonic 6Li/7Li atoms have been measured at the low energy -beam at CERN. For the shifts and widths of the levels the values [epsilon]2p = (-230 ï¿œ 72) eV, [Gamma]2p = (443 ï¿œ 210) eV, and [Gamma]3d = (0.130 ï¿œ 0.045) eV for 6Li, and [epsilon]2p = (-336 ï¿œ 60) eV, [Gamma]2p = (456 ï¿œ 190) eV, and [Gamma]3d = (0.210 ï¿œ 0.062) eV for 7Li were found. The data are compared with optical model predictions.
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  • Result 1-4 of 4

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