A 320 GeV/c pi- beam is incident upon a Au target. Transverse momentum and rapidity distributions of the final state pi- are plotted. - Reference: J.J. Whitmore et al., Z. Phys. C62, 199 (1994).
Simulation Conditions - Geant4 version: 8.1
- Models: QGS
Comments - Red points: data, Green points: QGS model, Blue points: HEP model
- Predictions of the QGS model:
- Pt: predictions lie for the most part within experimental error bars, although the trend is toward under-estimating with increasing Pt.
- rapidity: predictions tend to under-estimate the data, except at the highest and lowest rapidity
- Predictions of the HEP model:
- Pt: predictions lie within the scatter of the data points
- rapidity: predictions lie within the scatter of the data points. The predicted structure cannot be inferred from the data.
Summary - The data are not sufficiently precise to choose one model over the other.
Plots   |