Production of neutral kaons and lambdas from charged kaon interactions with complex nuclei

Thesis/Dissertation · Sat Jan 01 04:00:00 EST 1972

DOI:https://doi.org/10.2172/4920273· OSTI ID:4920273

Banner, David Lee ^[1]

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1. Univ. of Illinois, Urbana-Champaign, IL (United States)

Measurements of the cross sections for the production of neutral kaons with momenta ≳ 400 MeV/c and lambdas with momenta ≳ 700 MeV/c from charged kaon interactions incident at 850 MeV/c on carbon, aluminum, copper, tin, and lead were made at the Argonne National Laboratory Zero-Gradient Synchrotron. The measurements were made in order to determine which complex -3 nuclear targets produced the best "beams" of neutral kaons, for use in an experiment to observe the decay of neutral K mesons into π⁺π^- . The cross sections are presented, and models for fitting the data, involving A ^1/3 and A ^2/3 -parameterizations, are discussed. The K° and $$\bar{K}$$° cross sections are fit about equally well with an A ^1/3 and A ^2/3 -parameterization. Monte Carlo computer codes were written to see whether the experimental cross sections could be understood on the basis of a simple impulse approximation model. Relative cross sections computed with the Monte Carlo codes agree reasonably well, after experimental cuts were included, with the experimental cross sections for K° and $$\bar{K}$$° production. The agreement is not very good for Λ production, but a possible explanation for the disagreement is discussed. For a fixed-length target, 7 cm long, copper is found to be best for producing the most intense "beams" of neutral kaons and lambdas.

• Research Organization: Univ. of Illinois, Urbana-Champaign, IL (United States)
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• NSA Number: NSA-26-028833
• OSTI ID: 4920273
• Report Number(s): COO--1195-231
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALUMINIUM
ANTIKAONS NEUTRAL
CARBON
COPPER
CROSS SECTIONS
DECAY
EMISSION
GEV RANGE 100-1000
KAON BEAMS
KAONS MINUS
KAONS NEUTRAL
KAONS PLUS
LAMBDA PARTICLE BEAMS
LAMBDA PARTICLES
LEAD
MEV RANGE 100-1000
MOMENTUM
N54600* --Particle Accelerators--Experimental Facilities
N64120 --Physics (High Energy)--Particle Interactions & Properties (Experimental)--Weak
N64140 --Physics (High Energy)--Particle Interactions & Properties (Experimental)--Strong (Meson-induced)
NUCLEAR REACTIONS
PARTICLE PRODUCTION
PIONS MINUS
PIONS PLUS
SYNCHROTRONS
TARGETS
TIN