Progress report of a research program in experimental high energy physics, January 1, 1980-December 31, 1980. [Brown Univ. , Providence, Rhode Island]

Technical Report · Wed Oct 01 04:00:00 EDT 1980

DOI:https://doi.org/10.2172/6925011· OSTI ID:6925011

Shapiro, A M; Widgoff, M

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.

• Research Organization: Brown Univ., Providence, RI (USA)
• DOE Contract Number: AC02-76ER03130
• OSTI ID: 6925011
• Report Number(s): COO-3130TB-254
• Country of Publication: United States
• Language: English

Related Subjects

645100* -- High Energy Physics-- Particle Interactions & Properties-Experimental
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BOSONS
BUBBLE CHAMBERS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
GAS TRACK DETECTORS
GEV RANGE
GEV RANGE 100-1000
HADRON-HADRON INTERACTIONS
HADRONS
HIGH ENERGY PHYSICS
INTERACTIONS
KAON PLUS-PROTON INTERACTIONS
KAON-NUCLEON INTERACTIONS
KAON-PROTON INTERACTIONS
LEPTON-HADRON INTERACTIONS
MEASURING INSTRUMENTS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTON-HADRON INTERACTIONS
PHYSICS
PION PLUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
RADIATION DETECTORS
RESEARCH PROGRAMS
RESONANCE PARTICLES
RHO-765 RESONANCES
SPECTROMETERS
VECTOR MESONS