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  • Electronic Resource  (2)
  • 2000-2004  (2)
  • PACS. 13.30.-a Decays of baryons – 13.75.Ev Hyperon-nucleon interaction – 21.80Hypernuclei – 25.80.Pw Hyperon-induced reactions  (1)
  • PACS:25.75.-q Relativistic heavy-ion collisions – 25.75.Dw Particle and resonance production – 25.75.Gz Particle correlations  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Nonmesonic decay of the Λ-hyperon in hypernuclei produced by p + Au collisions (2001)
    Springer
    The European physical journal 11 (2001), S. 1-4 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 13.30.-a Decays of baryons – 13.75.Ev Hyperon-nucleon interaction – 21.80Hypernuclei – 25.80.Pw Hyperon-induced reactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The lifetime of the Λ-hyperon for the nonmesonic decay ΛN → NN has been determined by a measurement at COSY Jülich of the delayed fission of heavy hypernuclei produced in proton-Au collisions at T p = 1.9 GeV. It is found that heavy hypernuclei with mass numbers A≈ (180±5) and atomic numbers Z≈ (74±2) fission with a lifetime τΛ = 130±13 (stat.) ±15 (syst.) ps. This value together with the results obtained for other heavy hypernuclei in previous investigations indicates --on the confidence level of 0.9-- a violation of the phenomenological ΔI = 1/2 rule for the ΛN → NN transitions as known from the weak mesonic decays of kaons and hyperons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500170089
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  • 2
    Electronic Resource
    Electronic Resource
    (p,π±) correlations in central heavy-ion collisions at 1 ÷ 2 AGeV (2000)
    Springer
    The European physical journal 7 (2000), S. 507-518 
    Details
    ISSN: 1434-601X
    Keywords: PACS:25.75.-q Relativistic heavy-ion collisions – 25.75.Dw Particle and resonance production – 25.75.Gz Particle correlations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The proton–charged pion correlated emission is studied in the reactions Au (1.06 AGeV) + Au, Ni (1.06 and 1.93 AGeV) + Ni and Ni (1.97 AGeV) + Cu within the BUU approach. The associated invariant mass distributions are shifted to smaller energies with respect to the free Δ(1232) mass distribution due to kinematical reasons. We find that the existing and partly conflicting experimental data do not allow to draw definite conclusions on the in-medium modification of the Δ(1232).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00013652
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    Paper (German National Licenses)
    Fulltext
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