Transverse energy distributions in ultra-relativistic light ion collisions and impact parameter correlations in nucleon-nucleon interactions

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6901671

Callen, B W

Ultra-relativistic ({radical}s >> m{sub p}) p-nucleus and nucleus-nucleus collisions provide an interesting setting for studying the interaction of hadronic matter. The large energy densities involved in these processes offer the hope of observing new phenomena, such as the deconfinement of quarks and gluons from the usual hadronic and mesonic states. In searching for such new physics in the collisions of large nuclei, it is important to understand particle production in light nuclei first, since in these systems, complicating factors such as reinteraction of collision products with other nucleons are small. Thus collisions of light nuclei can establish a baseline from which to understand the more complex interactions of larger nuclei. This thesis contains three parts. In the first, the results of pp, {alpha}{alpha}, p{alpha}, and deuteron-deuteron collisions at {radical} s = 31 GeV in the nucleon-nucleon center of mass are studied. These data were recorded in 1983 with the Axial Field Spectrometer, during a special run at the CERN ISR. The transverse energy (E{sub t}) distributions in these four reactions, as measured with a uranium/copper/scintillator sampling calorimeter, are presented. In the second part of the thesis, a model is presented for estimating the multiplicity accompanying the production of jets, W and Z bosons. The variation of and the charged particle density vs. pseudorapidity are examined to very large values of E{sub t} in {radical} s = 31 GeV pp collisions, made possible by the use of a large solid angle calorimeter. Measurements of and the charge particle density are also presented, extending previous measurements using only charged E{sub t}. This provides new data with which to test models of low p{sub t} particle production.

• Research Organization: Pennsylvania Univ., Philadelphia, PA (USA)
• OSTI ID: 6901671
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400700 -- Radiochemistry & Nuclear Chemistry
645100 -- High Energy Physics-- Particle Interactions & Properties-Experimental
651100* -- Nuclear Physics-- Experimental Techniques-- (1980-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BOSONS
CALCULATION METHODS
CERN ISR
CHARGED PARTICLES
COLLISIONS
DATA
DATA ANALYSIS
ELEMENTARY PARTICLES
ENERGY
EXPERIMENTAL DATA
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
ION COLLISIONS
IONS
KINETIC ENERGY
LIGHT IONS
MEASURING INSTRUMENTS
MEASURING METHODS
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
STORAGE RINGS
TRANSVERSE ENERGY