Charm- and strangeness-production in {sigma}{sup -}-nucleus-interactions

Journal Article · Tue May 20 00:00:00 EDT 1997 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.54382· OSTI ID:21175492

Wittmann, Eva B ^[1]; Postfach 103980, D-69029 Heidelberg ^[2]

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1. Max-Planck-Instut fuer Kernphysik (Germany)
2. Germany

We report on a study of the leading particle effect both in strange and charm final states. In the strange sector the inclusive cross sections for {xi}{sup -} hyperon production in high-energy {sigma}{sup -}, {pi}{sup -} and neutron induced interactions were measured by the WA89 experiment at CERN. A strong leading effect for {xi}{sup -} produced by {sigma}{sup -} is observed. The influence of the target mass on the {xi}{sup -} cross section is explored by comparing reactions on copper and carbon nuclei. This constitutes the first measurement using three different projectiles and two different targets within the same experiment thus ensuring small systematic uncertainties. In the charm sector we studied the leading particle effect in D{sup -}/D{sup +}, D{sub s}{sup -}/D{sub s}{sup +} and {lambda}{sub c}{sup +}/{lambda}-bar{sub c}{sup -} production in high energy {sigma}{sup -} interactions. The study of D{sub s}{sup -}/D{sub s}{sup +} production represents the first measurement of charm production with a leading strange quark.

• OSTI ID: 21175492
• Journal Information: AIP Conference Proceedings, Vol. 412, Issue 1; Conference: 6. conference on the intersections of particle and nuclear physcis, Big Sky, MT (United States), 25 May - 2 Jun 1997; Other Information: DOI: 10.1063/1.54382; (c) 1997 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTILAMBDA PARTICLES
CARBON 12 TARGET
COPPER 63 REACTIONS
CROSS SECTIONS
D S MESONS
HYPERON REACTIONS
INCLUSIVE INTERACTIONS
LAMBDA C PLUS BARYONS
LEADING PARTICLES
NEUTRON REACTIONS
NEUTRONS
PARTICLE PRODUCTION
PION MINUS REACTIONS
PIONS MINUS
S QUARKS
SIGMA MINUS PARTICLES
STRANGENESS
XI MINUS PARTICLES