Large-angle proton-nucleus scattering shows no evidence for intermediateΔstates

Autor: H.P. Gubler, R. L. Helmer, W. Bauhoff, C. A. Miller, D. A. Hutcheon, C. Broude, R. Abegg, K. P. Jackson, H. O. Meyer, W.P. Lee, P. Schwandt, W. T. H. van Oers
Rok vydání: 1985
Předmět:
Zdroj: Physical Review C. 31:1569-1572
ISSN: 0556-2813
Popis: It has been suggested that the discrepancy between data for large-angle proton-nucleus elastic scattering at 200 MeV and standard optical model interpretations can be explained by the formation of intermediate ..delta.. isobars. To test this hypothesis we have carried out a measurement of the elastic scattering cross section for 300 MeV protons from /sup 12/C for momentum transfers up to 6.8 fm/sup -1/. Although the energy was chosen to match the resonance energy for ..delta.. production, no need for corrections to a simple optical model, and thus no experimental evidence for intermediate ..delta.. isobars, was found.
Databáze: OpenAIRE