Progress report of a research program in experimental high-energy physics, 1 January 1983-31 December 1983. [Brown University]

Technical Report · Fri Jul 01 04:00:00 EDT 1983

OSTI ID:5912808

Widgoff, M; Shapiro, A M

An experimental program to study the interactions of hadrons and photons is being carried out using hybrid systems which include bubble chambers as visible targets as well as counter spectrometers for particle detection, measurement and identification. Experiments are now being carried out at Fermilab and SLAC, and an experiment on neutrino interactions has been approved for the Tevatron at Fermilab. We have been analyzing the film of our one-million-picture 1982 exposure for the study of ..pi../sup +-/, K/sup +/ and p interactions in hydrogen and in magnesium, silver and gold, at a beam momentum of 200 Gev/c (FNAL Experiments E-565 and E-570). Preliminary results confirm the positive charge excess observed among relativistic particles in our test run of 1981. During the past year analysis has continued on the data of SLAC experiments BC 72/73, investigating the interactions with hydrogen of 20 GeV polarized photons. Results have been obtained and published on the photoproduction of charm and on the lifetimes of charmed particles. Analysis is also in progress on production of vector mesons and strange particles. The study of charm photoproduction and decay is being extended in SLAC experiment BC 75. An initial run of over 600,000 pictures was obtained in the SLAC Hybrid Facility in Spring 1983 with substantially improved resolution in the bubble chamber. Extensive work continues on the analysis of our earlier FNAL experiments on ..pi../sup +-/p, K/sup +/p, and pp interactions at 147 GeV/c (FNAL Experiment E-299). Preparations are in progress for our approved Tevatron II experiment designed to study neutrino interactions and particularly the production of tau neutrinos, using a neutrino beam produced by beam dump techniques and employing a hybrid system with a new one-meter holographic bubble chamber.

• Research Organization: Brown Univ., Providence, RI (USA)
• DOE Contract Number: AC02-76ER03130
• OSTI ID: 5912808
• Report Number(s): DOE/ER/03130-T11; ON: DE83016040
• Country of Publication: United States
• Language: English

Related Subjects

645100* -- High Energy Physics-- Particle Interactions & Properties-Experimental
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATOR FACILITIES
ACCELERATORS
ALKALINE EARTH METALS
BARYON REACTIONS
BASIC INTERACTIONS
BOSONS
BUBBLE CHAMBERS
CHARGED-PARTICLE REACTIONS
CHARM PARTICLES
CYCLIC ACCELERATORS
DECAY
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMILAB ACCELERATOR
GAS TRACK DETECTORS
GEV RANGE
GEV RANGE 100-1000
GOLD
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
HIGH ENERGY PHYSICS
INTERACTIONS
KAON MINUS-PROTON INTERACTIONS
KAON PLUS-PROTON INTERACTIONS
KAON REACTIONS
KAON-NUCLEON INTERACTIONS
KAON-PROTON INTERACTIONS
MAGNESIUM
MEASURING INSTRUMENTS
MESON REACTIONS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
METALS
NATIONAL ORGANIZATIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTOPRODUCTION
PHYSICS
PION MINUS-PROTON INTERACTIONS
PION PLUS-PROTON INTERACTIONS
PION REACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
POSTULATED PARTICLES
PROTON REACTIONS
RADIATION DETECTORS
RESEARCH PROGRAMS
RESONANCE PARTICLES
SILVER
STANFORD LINEAR ACCELERATOR CENTER
STRANGE PARTICLES
SYNCHROTRONS
TRANSITION ELEMENTS
US DOE
US ERDA
US ORGANIZATIONS
VECTOR MESONS