Neutral-strange-particle production in 200-GeV/ c p /. pi. sup + / K sup + interactions on Au, Ag, and Mg

Journal Article · Sat Feb 01 00:00:00 EST 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.45.734· OSTI ID:7206024

Brick, D H; Widgoff, M ^[1]; Beilliere, P; Lutz, P; Narjoux, J L ^[2]; Gelfand, N ^[3]; Alyea, Jr, E D ^[4]; Bloomer, M; Bober, J; Busza, W; Cole, B; Frank, T A; Fuess, T A; Grodzins, L; Hafen, E S; Haridas, P; Huang, D; Huang, H Z; Hulsizer, R; Kistiakowsky, V ; Ledoux, R J; Milstene, C; Noguchi, S; Oh, S H; Pless, I A; Steadman, S; Stoughton, T B; Suchorebrow, V; Tether, S; Trepagnier, P C; Wadsworth, B F; Wu, Y; Yamamoto, R K ^[5]; Cohn, H O ^[6]; Calligarich, E; Corti, G; Dolfini, R; Gianini, G; Introzzi, G; Ratti, S ^[7]; fRfP, ^[8]

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1. Brown University, Providence, Rhode Island 02912 (United States)
2. College de France, Paris CEDEX 05 (France)
3. Fermilab, Batavia, Illinois 60510 (United States)
4. Indiana University, Bloomington, Indiana 47401 (United States)
5. Department of Physics and the Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139 (United States)
6. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830 (United States)
7. U
8. International Hybrid Spectrometer Consortium

We have used the Fermilab 30-in. bubble-chamber--hybrid spectrometer to study neutral-strange-particle production in the interactions of 200-GeV/{ital c} protons and {pi}{sup +} and {ital K}{sup +} mesons with nuclei of gold, silver, and magnesium. Average multiplicities and inclusive cross sections for {ital K}{sup 0} and {Lambda} are measured, and a power law is found to give a good description of their {ital A} dependence. The exponent characterizing the {ital A} dependence is consistent with being the same for {ital K}{sup 0} and {Lambda} production, and also the same for proton and {pi}{sup +} beams. Average {ital K}{sup 0} and {Lambda} multiplicities, as well as their ratio, have been measured as functions of the numbers of projectile collisions {nu}{sub {ital p}} and secondary collisions {nu}{sub {ital s}} in the nucleus, and indicate that rescattering contributes significantly to enhancement of {Lambda} production but not to {ital K}{sup 0} production. The properties of events with multiple {ital K}{sup 0}'s or {Lambda}'s also corroborate this conclusion. {ital K}{sup 0} rapidities are in the central region and decrease gently with increasing {nu}{sub {ital p}}, while {Lambda} rapidities are in the target-fragmentation region and are independent of {nu}{sub {ital p}}. {ital K}{sup 0} and {Lambda} multiplicities increase with the rapidity loss of the projectile, but their rapidities do not.

• OSTI ID: 7206024
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 45:3; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
KAON-NUCLEON INTERACTIONS
INCLUSIVE INTERACTIONS
PION-NUCLEON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
STRANGE PARTICLES
PARTICLE PRODUCTION
CROSS SECTIONS
GEV RANGE 100-1000
GOLD
KAONS PLUS
MAGNESIUM
MULTIPLICITY
PARTICLE RAPIDITY
PIONS PLUS
SILVER
SPECTROMETERS
ALKALINE EARTH METALS
BARYON-BARYON INTERACTIONS
BOSONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
GEV RANGE
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
KAONS
MEASURING INSTRUMENTS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
METALS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
STRANGE MESONS
TRANSITION ELEMENTS
662340* - Hadron Interactions- (1992-)
662440 - Properties of Other Particles Including Hypothetical Particles- (1992-)