Meson production in relativistic-heavy-ion collisions

Technical Report · Sat Aug 01 04:00:00 EDT 1981

DOI:https://doi.org/10.2172/5632754· OSTI ID:5632754

Schnetzer, S R

The inclusive kappa/sup +/ production cross sections were measured at angles from 15 to 80/sup 0/ in collisions of protons (2.1 GeV) and deuterons (2.1 GeV/amu) on NaF and Pb, and Ne (2.1 GeV/amu) on C, NaF, KCl, Cu, and Pb. The kaons were identified by measuring the time of flight and the momentum in a magnetic spectrometer, and by detecting the particles from the kaon decays in a Pb glass Cerenkov counter. The momentum range of the detected kaons extended from 350 MeV/c to 750 MeV/c. The multiplicity of each event was measured by a set of scintillation counter telescopes which were situated around the target. The differential cross section of the kaons falls off exponentially with center of mass energy in the nucleon nucleon center of mass frame. In addition, the angular distribution of the kaons is nearly isotropic in this frame even for p/sup -1/ NaF and Ne/sup -1/ Pb collisions. The data are compared with a row on row model and a thermal model. Neither are able to explain all features of the data. The row on row model does not reproduce the near isotropy in the nucleon nucleon frame, and the thermal model overpredicts the kaon yield by a factor of approximately twenty.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5632754
• Report Number(s): LBL-13727; ON: DE82005652
• Country of Publication: United States
• Language: English

Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
651325 -- Nuclear Properties & Reactions
A=6-19
Experimental-- Nuclear Reactions & Scattering-- (-1987)
651425 -- Nuclear Properties & Reactions
A=20-38
Experimental-- Nuclear Reactions & Scattering-- (-1987)
651625 -- Nuclear Properties & Reactions
A=59-89
Experimental-- Nuclear Reactions & Scattering-- (-1987)
651925 -- Nuclear Properties & Reactions
A=190-219
Experimental-- Nuclear Reactions & Scattering-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL COMPOUNDS
ALKALI METALS
BARYON REACTIONS
BOSONS
CARBON
CHARGED-PARTICLE REACTIONS
CHERENKOV COUNTERS
CHLORIDES
CHLORINE
CHLORINE COMPOUNDS
COPPER
CROSS SECTIONS
DATA
DEUTERON REACTIONS
DIFFERENTIAL CROSS SECTIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FLUORIDES
FLUORINE
FLUORINE COMPOUNDS
GEV RANGE
GEV RANGE 01-10
HADRON REACTIONS
HADRONS
HALIDES
HALOGEN COMPOUNDS
HALOGENS
HEAVY ION REACTIONS
INFORMATION
KAONS
KAONS PLUS
LEAD
MAGNETIC SPECTROMETERS
MEASURING INSTRUMENTS
MESONS
METALS
MULTIPLICITY
NEON 20 REACTIONS
NONMETALS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
PARTICLE PRODUCTION
POTASSIUM
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
PROTON REACTIONS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
SODIUM
SODIUM COMPOUNDS
SODIUM FLUORIDES
SPECTROMETERS
STRANGE PARTICLES
TIME-OF-FLIGHT METHOD
TRANSITION ELEMENTS