pi. /sup 0/ production in. pi. /sup -/p interactions at 250 GeV/c

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6760794

Hays, P J

Results are presented on neutral production in ..pi..-p interactions at 250 GeV/c. The data was obtained from a 46,000 picture exposure of the liquid hydrogen filled 15 foot bubble chamber at Fermi National Accelerator Laboratory. A total of 22,330 beam interactions and 25,110 candidate gammas were found in the film. Semi-inclusive cross sections were obtained for 2 through 24 charged particle topologies. The production vertex and all associated gammas were measured in 45% of the interactions having one or more candidate gammas. The neutral pion multiplicity distribution was obtained as a function of charged topology using the scan information on gamma production. The total neutral pion multiplicity was found to be equivalent to 1/2 the produced charged pion multiplicity. The total (charged plus neutral) non-strange multiplicity distribution was obtained for 0 to 15 particles. The total multiplicity was found to display evidence of oscillatory behavior with the final state more likely to contain even numbers of particles than odd. Neutral pion longitudinal and transverse momentum and rapidity distributions were obtained for the measured gamma momentum distributions. This experiment was the first hadron study in the FNAL 15 foot bubble chamber and presents the first data on semi-inclusive neutral pion and total multiplicities at high energies.

• Research Organization: Florida State Univ., Tallahassee (USA)
• OSTI ID: 6760794
• Country of Publication: United States
• Language: English

Related Subjects

645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BOSONS
CYCLIC ACCELERATORS
DATA
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMILAB ACCELERATOR
GEV RANGE
GEV RANGE 100-1000
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
LINEAR MOMENTUM
LONGITUDINAL MOMENTUM
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MULTIPLE PRODUCTION
MULTIPLICITY
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PARTICLE RAPIDITY
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PIONS
PIONS MINUS
PIONS NEUTRAL
PIONS PLUS
PSEUDOSCALAR MESONS
SYNCHROTRONS
TRANSVERSE MOMENTUM