lambda. production near threshold in central nucleus-nucleus collisions

Journal Article · Mon Jul 27 00:00:00 EDT 1981 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.47.229· OSTI ID:6134599

Harris, J W; Sandoval, A; Stock, R; Stroebele, H; Renfordt, R E; Geaga, J V; Pugh, H G; Schroeder, L S; Wolf, K L; Dacal, A

..lambda..'s produced in central collisions of /sup 40/Ar+KCl at 1.8 GeV/u incident energy were detected in a streamer chamber by their charged-particle decay. For central collisions with impact parameters b<2.4 fm the ..lambda.. production cross section is 7.6 +- 2.2 mb. A calculation in which ..lambda.. production occurs in the early stage of the collision qualitatively reproduces the results but underestimates the transverse momenta. An average ..lambda.. polarization of -0.10 +- 0.05 is observed.

• Research Organization: Gesellshaft fuer Schwerionenforschung, D-6100 Darmstadt, West Germany
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6134599
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 47:4; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

651525* -- Nuclear Properties &amp; Reactions
A=39-58
Experimental-- Nuclear Reactions &amp; Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL COMPOUNDS
ARGON 40 REACTIONS
BARYONS
CHARGED-PARTICLE REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CROSS SECTIONS
DATA
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
GAS TRACK DETECTORS
GEV RANGE
GEV RANGE 01-10
HADRONS
HALIDES
HALOGEN COMPOUNDS
HEAVY ION REACTIONS
HYPERONS
IMPACT PARAMETER
INFORMATION
KINETICS
LAMBDA PARTICLES
LINEAR MOMENTUM
MATHEMATICAL SPACE
MEASURING INSTRUMENTS
MONTE CARLO METHOD
NUCLEAR REACTION KINETICS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE PRODUCTION
PHASE SPACE
POLARIZATION
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
RADIATION DETECTORS
REACTION KINETICS
RESCATTERING
SCATTERING
SPACE
SPARK CHAMBERS
STRANGE PARTICLES
STREAMER SPARK CHAMBERS
TRANSVERSE MOMENTUM