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Titolo:
A microscopic picture of strangeness production at the SPS
Autore:
Vance, SE;
Indirizzi:
Brookhaven Natl Lab, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA11973 aven Natl Lab, Upton, NY 11973 USA
Titolo Testata:
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
fascicolo: 3, volume: 27, anno: 2001,
pagine: 603 - 610
SICI:
0954-3899(200103)27:3<603:AMPOSP>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY-ION COLLISIONS; QUARK-GLUON PLASMA; PB COLLISIONS; BARYON NUMBER; MATTER; ENHANCEMENT; MODEL; HADRONIZATION; DYNAMICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Vance, SE Brookhaven Natl Lab, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA 11973 Lab, Upton, NY 11973 USA
Citazione:
S.E. Vance, "A microscopic picture of strangeness production at the SPS", J PHYS G-NU, 27(3), 2001, pp. 603-610

Abstract

The microscopic origin of the strangeness enhancements observed in PbPb collisions at the SPS is studied by testing the effects of three mechanisms. First, the junction processes found in the HIJING/B (B) over bar event generator are reviewed showing that they can account for only part of the observed hyperon enhancements. Second, the efficient final state chemical changing processes (e.g. Lambda + K <----> Xi + pi) are included by adding the General Cascade Program (GCP) to HIJING/B (B) over bar. While these processesare shown to further enhance multistrange baryon production, HIJING/B (B) over bar +GCP is still unable to fully describe either the large hyperon yields or the increasing K+/pi (+) ratio. Finally, the addition of transient field fluctuations or ropes to HIJING/B (B) over bar +GCP is shown to be needed to account for the large hyperon yields and for the behaviour of the K/pi (+) ratio.

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Documento generato il 03/04/20 alle ore 08:29:56