A study of 4 Gev/c x[superscript -] -p interactions using a bubble chamber
Yao Sun Liu · Spiral (Imperial College London) · 1963
The author joined the group in 1959.He spent a year studying the basic theory of elementary particles before taking part in film analysis for the 24 Gev/c P-P experiment in which the group was a collaborator.After the completion of measurement and reconstruction of the P-P events, the author took responsibility for organizing the scanning, measuring of some 10 Gev/c 117-p films which were taken in CERN using the 81 cm Hydrogen Bubble Chamber of Saclay and Ecole Polytechnique.The primary beam was then found io have far too large a momentum and angular spread to make good analysis possible.Subsequently, in 1961, a decision was made to carry out a more refined experiment using a 4 Gev/c pion beam in the Bubble Chamber, in collaboration with the Achen, Munich, Hamburg, Bonn and Birmingham groups.Since November 1961, about 100,000 7i7-p pictures have.1►vproduced during 3 runs, together with an equivalent number of ie-p pictures.The author took part in two of these runs.The analysis of the results of the /t-p experiment in this thesis was partly made by the author.The work on the p -particle contribution to pion-proton scattering discussed in Chapter II is based on a paper by the author and his colleague