Experimental high energy physics. Progress report, 1 January 1985-31 December 1985

Technical Report · Mon Jul 01 04:00:00 EDT 1985

OSTI ID:5561286

Widgoff, M

An experimental program to study the interactions of hadrons, photons, and neutrinos is being carried out using hybrid systems which include bubble chambers as visible targets and counter spectrometers for particle detection, identification, and momentum measurements. Experiments have been run in both positive and negative hadron beams at Fermilab and with polarized photons at SLAC. Experiments with neutrino beams at Tevatron II at Fermilab are in progress and in preparation. In addition, we have joined in a collaboration to submit a Letter of Intent to build a detector for experiments at the new ep colliding beam accelerator HERA at DESY. We have been analyzing the film and counter data of our one-million-picture exposure for the study of ..pi../sup +/, K/sup +/ and p interactions in hydrogen and magnesium, silver and gold, at a beam momentum of 200 GeV/c (FNAL Experiments E-565 and E-570), as well as continuing the physics analysis of our earlier FNAL experiments on ..pi../sup +/p, K/sup +/p and pp interactions at 147 GeV/c (FNAL Experiment E-299). During the past year analysis has continued on the data of SLAC experiments BC72/73/75, studying the interactions in hydrogen of 20 GeV polarized photons. Results have been obtained on photoproduction of charm and on the lifetimes of charmed particles, and on vector meson and strange particle production. Inclusive ..gamma..p interactions are being studied in detail in this high statistics sample. The hybrid detector for neutrino studies at Tevatron II is operating at Fermilab, as a test for E636, the tau neutrino search to be run in a neutrino beam from a beam dump, and we are collecting data on muon neutrino interactions in the high Q/sup 2/ region made accessible for the first time by the Tevatron (E745). Brown built scintillator hodoscopes for the trigger system of the detector. Data including holographic photographs of the Tohoku one-meter bubble chamber are being obtained, and film analysis has begun.

• Research Organization: Brown Univ., Providence, RI (USA)
• DOE Contract Number: AC02-76ER03130
• OSTI ID: 5561286
• Report Number(s): DOE/ER/03130-259; ON: DE85014447
• 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 REACTIONS
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BEAMS
BOSONS
CHARGED-PARTICLE REACTIONS
CHARM PARTICLES
COLLIDING BEAMS
DATA ANALYSIS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
HIGH ENERGY PHYSICS
INTERACTIONS
KAON PLUS REACTIONS
KAON PLUS-PROTON INTERACTIONS
KAON REACTIONS
KAON-NUCLEON INTERACTIONS
KAON-PROTON INTERACTIONS
LEPTONS
MASSLESS PARTICLES
MESON REACTIONS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NEUTRINOS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTONS
PHOTOPRODUCTION
PHYSICS
PION PLUS REACTIONS
PION PLUS-PROTON INTERACTIONS
PION REACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
POLARIZED BEAMS
PROTON REACTIONS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
RESEARCH PROGRAMS
RESONANCE PARTICLES
STRANGE PARTICLES
VECTOR MESONS