Subthreshold K+ production in proton nucleus collisions
1996
13 pages
Published in:
- Z.Phys.A 356 (1996) 313-325
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Abstract: (Springer)
Double differential K+cross sections have been measured in p+C collisions at 1.2, 1.5 and 2.5 GeV beam energy and in p+Pb collisions at 1.2 and 1.5 GeV. The K+ spectrum taken at 2.5 GeV can be reproduced quantitatively by a model calculation which takes into account first chance proton-nucleon collisions and internal momentum with energy distribution of nucleons according to the spectral function. At 1.2 and 1.5 GeV beam energy the K+ data excess significantly the model predictions for first chance collisions. When taking secondary processes into account the results of the calculations are in much better agreement with the data.- p nucleus: inclusive reaction
- carbon
- lead
- K+: hadroproduction
- hadroproduction: K+
- threshold
- pi+: hadroproduction
- hadroproduction: pi+
- nuclear properties: effect
- spectral representation
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