System-size dependence of {lambda} and {xi} production in nucleus-nucleus collisions at 40A and 158A GeV measured at the CERN Super Proton Synchrotron

Journal Article · Tue Sep 15 00:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.034906· OSTI ID:21293862

Anticic, T; Kadija, K; Nicolic, V; Susa, T ^[1]; Baatar, B; Kolesnikov, V I; Malakhov, A I; Melkumov, G L ^[2]; Barna, D; Csato, P; Fodor, Z; Gal, J; Hegyi, S; Laszlo, A; Levai, P; Molnar, J; Palla, G; Sikler, F; Szentpetery, I; Sziklai, J ^[3]

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1. Rudjer Boskovic Institute, Zagreb (Croatia)
2. Joint Institute for Nuclear Research, Dubna (Russian Federation)
3. KFKI Research Institute for Particle and Nuclear Physics, Budapest (Hungary)

Results on {lambda}, {lambda}, and {xi}{sup -} production in centrality selected Pb+Pb reactions at 40A and 158A GeV and in near-central C+C and Si+Si reactions at 158A GeV are presented. Transverse mass spectra, rapidity spectra, and multiplicities in dependence of the system size are discussed. Comparisons to transport models (ultrarelativistic quantum molecular dynamics and hadron string dynamics) and to the core-corona approach are performed. Although {lambda} and {lambda} production can be described by transport models reasonably well, these models do not agree with the {xi}{sup -} measurements. However, the core-corona picture fits very well the system-size dependence of {lambda} and {xi}{sup -}, whereas it agrees less well with the {lambda} data.

• OSTI ID: 21293862
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 80, Issue 3; Other Information: DOI: 10.1103/PhysRevC.80.034906; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATOM-ATOM COLLISIONS
CARBON
CERN
CERN SPS SYNCHROTRON
COLLISIONS
COMPARATIVE EVALUATIONS
GEV RANGE
LAMBDA PARTICLES
LEAD
MASS SPECTRA
MOLECULAR DYNAMICS METHOD
MULTIPLICITY
NUCLEI
PARTICLE RAPIDITY
PROTONS
RELATIVISTIC RANGE
SILICON
SYNCHROTRONS
TRANSPORT THEORY
XI MINUS PARTICLES