Progress report of a research program in experimental high energy physics, January 1, 1980-December 31, 1980. [Brown Univ. , Providence, Rhode Island]
Description: An experimental program to study the interactions of hadrons and photons is being carried out with hybrid systems that include bubble chambers as visible targets as well as counter spectrometers. Experiments are being performed at the accelerators of the laboratories at Batavia, Stanford, and Geneva, Switzerland. The bubble chamber - hybrid system group is engaged in several experiments at Fermilab. Extensive analysis of the interactions of 147-GeV/c ..pi../sup +/, K/sup +/, and p in hydrogen is in progress. The results of an earlier experiment on ..pi../sup -/p interactions at the same momentum, in the same experimental set-up, are available for comparison; in this way the range of incident-channel quantum numbers studied is extended with a minimum of systematic error. This year there has been particular emphasis on associated production in interactions of the form ab ..-->.. cX, on rho/sup 0/ production, and on multiparticle correlations. Comparison of hadron production by hadrons with hadron production by leptons is being extended to all the incident particles, for a variety of kinematic variables. Two experiments with an improved hybrid system are now scheduled for data-taking at Fermilab in early 1981, to study ..pi../sup + -/K/sup +/ and p/sup + -/ interactions in hydrogen, and in aluminum, slver, and gold foils, at beam momenta of 200 and 400 GeV/c. A similar study at 250 GeV/c, using the large European Hybrid System at CERN, will begin during 1981. During the spring and summer of 1980, data-taking was begun on two experiments investigating photoproduction of charm and vector mesons, in a polarized monoenergetic backscattered laser beam of 20 GeV/c using the SLAC Hybrid Facility.
Date: October 1, 1980
Creator: Shapiro, A.M. & Widgoff, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department