THE EVALUATION OF BUBBLE CHAMBER PHOTOGRAPHS AND THE EXPERIMENTAL RESULTS ON $pi$ MESON--PROTON SCATTERING (in German)
A numerical method for the analysis of elastic and inelastic scattering of 1.14-Bev negative pions on protons in bubble chamber photographs is described. Two criteria are used for the elimination of events with short tracks in which an analysis was difficult or impossible. For the avoidance of systematic errors in the results, a correction factor was calculated for each event measured. From the coordinates of multiple bubbles on each track and from the curvature of the secondary tracks in the magnetic field, the geometric and cinematic magnitudes of an event were calculated using a computer. It was then generally possible to decide whether an event was elastic or inelastic and--in the case it was inelastic with simple pion production-whether a pi /sup +/ or a pi /sup 0/ was produced. In some inelastic events in which this last decision was not possible cinematically, the " delta beam'' density was used for the decision. The total cross section for the various reactions of the pi --proton scattering were calculated from the measuring results. Moreover, the pulse distribution of the secondary particles of the reactions pi /sup -/ + p yields pi /sup -/ + p + pi /sup 0/ and pi /sup -/ + p yields pi /sup -/ + n + pi /sup +/ were given in the cent er-of-mass system. (tr-anth)
- Research Organization:
- Max-Planck-Institut fur Physik and Astrophysik, Munich
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-14-000843
- OSTI ID:
- 4219590
- Journal Information:
- Ann. Physik, Journal Name: Ann. Physik Vol. Vol: 4
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
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