Baryon production in e/sup +/e/sup -/ annihilation at. sqrt. s = 29 GeV: Clusters or diquarks
Journal Article
·
· Phys. Rev. Lett.; (United States)
We use the time-projection chamber detector to study mechanisms of baryon production in the central rapidity region of jets from e/sup +/e/sup -/ annihilation. On the basis of angular correlations between protons and antiprotons, we exclude the isotropic decay of heavy mesonic clusters as a dominant source of baryons at 95% confidence level. The diquark mechanisms used in string fragmentation models reproduce the data, provided that diquarks are formed in a two-step process which allows mesons to be produced in between the baryon and antibaryon.
- Research Organization:
- Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720; University of California, Los Angeles, California 90024; University of California, Riverside, California 92521; Johns Hopkins University, Baltimore, Maryland 21218; University of Massachusetts, Amherst
- DOE Contract Number:
- AC03-76SF00098; AA03-76SF00034; AC02-76ER03330
- OSTI ID:
- 5186685
- Journal Information:
- Phys. Rev. Lett.; (United States), Vol. 55:10
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
PAIR PRODUCTION
ELECTRON-POSITRON INTERACTIONS
ANNIHILATION
ANGULAR CORRELATION
FRAGMENTATION
GEV RANGE 10-100
JET MODEL
PARTICLE RAPIDITY
PROJECTION SPARK CHAMBERS
QUANTUM CHROMODYNAMICS
QUARK MODEL
STRING MODELS
BASIC INTERACTIONS
COMPOSITE MODELS
CORRELATIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXTENDED PARTICLE MODEL
FERMIONS
FIELD THEORIES
GAS TRACK DETECTORS
GEV RANGE
HADRONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
QUANTUM FIELD THEORY
RADIATION DETECTORS
SPARK CHAMBERS
645102* - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties
BARYONS
PAIR PRODUCTION
ELECTRON-POSITRON INTERACTIONS
ANNIHILATION
ANGULAR CORRELATION
FRAGMENTATION
GEV RANGE 10-100
JET MODEL
PARTICLE RAPIDITY
PROJECTION SPARK CHAMBERS
QUANTUM CHROMODYNAMICS
QUARK MODEL
STRING MODELS
BASIC INTERACTIONS
COMPOSITE MODELS
CORRELATIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXTENDED PARTICLE MODEL
FERMIONS
FIELD THEORIES
GAS TRACK DETECTORS
GEV RANGE
HADRONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
QUANTUM FIELD THEORY
RADIATION DETECTORS
SPARK CHAMBERS
645102* - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties