Hyperon production in e/sup +/e/sup -/ interactions in the upsilon region

Journal Article · Mon Jul 02 04:00:00 EDT 1984 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.53.24· OSTI ID:6650713

Alam, M S; Csorna, S E; Garren, L; Mestayer, M D; Panvini, R S; Yi, X; Avery, P; Bebek, C; Berkelman, K; Cassel, D G

We report measurements from CLEO detector of the rate of ..xi.. and ..lambda.. production in e/sup +/e/sup -/ interactions in the upsilon region. Hyperon production from the decay of the UPSILON(1S) is compared with continuum e/sup +/e/sup -/ data. The ratio of the production rates of ..lambda.. (and Lambda-bar) to K/sup 0/ (and K-bar /sup 0/) on the UPSILON(1S) is 0.21 +- 0.03, much larger than in the continuum, 0.07 +- 0.01. The ratios of the production rates of the ..xi.. and the ..lambda.. are comparable, 0.10 +- 0.02 (UPSILON(1S)) and 0.07 +- 0.02 (continuum). We discuss some implications of the data for gluon and quark fragmentation models.

• Research Organization: Vanderbilt University, Nashville, Tennessee 37235
• OSTI ID: 6650713
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 53:1; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BARYONS
BASIC INTERACTIONS
BOSONS
DECAY
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
FRAGMENTATION
GLUONS
HADRONS
HYPERONS
INTERACTIONS
KAONS
KAONS NEUTRAL
LAMBDA PARTICLES
LEPTON-LEPTON INTERACTIONS
LUMINOSITY
MASS SPECTRA
MESON RESONANCES
MESONS
OPTICAL PROPERTIES
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHYSICAL PROPERTIES
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUARKS
RESONANCE PARTICLES
SIGMA PARTICLES
SPECTRA
STRANGE PARTICLES
UPSILON RESONANCES
UPSILON-9500 RESONANCES