Polarization of. lambda. 's and Lambda-bar's produced by 400-GeV protons

Journal Article · Mon Aug 28 04:00:00 EDT 1978 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.41.607· OSTI ID:6686882

Heller, K; Cox, P T; Dworkin, J; Overseth, O E; Skubic, P; Schachinger, L; Devlin, T; Edelman, B; Edwards, R T; Bunce, G; Handler, R; March, R; Martin, P; Pondrom, L; Sheaff, M

We have measured the polarization of 3 x 10/sup 6/ ..lambda../sup 0/ and 2.5 x 10/sup 5/Lambda-bar/sup 0/ hyperons produced by 400-GeV protons on a beryllium target. The hyperons were detected at a fixed angle of 7.2 mrad and in the momentum range from 50 to 300 GeV/c for lambda/sup 0/ and 50 to 200 GeV/c for Lambda-bar/sup 0/. The ..lambda../sup 0/ polarization agrees with that measured at 24 and 300 GeV and is -0.24 +- 0.04 at p/sub T/ = 2.1 GeV/c. The Lambda-bar/sup 0/ polarization is zero up to p/sub T/ = 2.1 GeV/c.

• Research Organization: Department of Physics, University of Michigan, Ann Arbor, Michigan 48109
• OSTI ID: 6686882
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 41:9; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
ANTIBARYONS
ANTIHYPERONS
ANTILAMBDA PARTICLES
ANTIMATTER
ANTIPARTICLES
BARYON REACTIONS
BARYONS
BERYLLIUM 9 TARGET
BREMSSTRAHLUNG
CHARGED-PARTICLE REACTIONS
DECAY
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 100-1000
GLUON MODEL
HADRON REACTIONS
HADRONS
HYPERONS
INTERACTIONS
LAMBDA PARTICLES
LINEAR MOMENTUM
MATHEMATICAL MODELS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
POLARIZATION
POLARIZED PRODUCTS
PROTON REACTIONS
RADIATIONS
STRANGE PARTICLES
TARGETS
TRANSVERSE MOMENTUM