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Titolo:
Probing hadronization with strangeness
Autore:
Bass, SA; Danielewicz, P; Dumitru, A; Pratt, S;
Indirizzi:
Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA Michigan State Univ E Lansing MI USA 48824 stron, E Lansing, MI 48824 USA Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA Michigan State Univ E Lansing MI USA 48824 n Lab, E Lansing, MI 48824 USA Columbia Univ, Dept Phys, New York, NY 10027 USA Columbia Univ New York NY USA 10027 iv, Dept Phys, New York, NY 10027 USA
Titolo Testata:
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
fascicolo: 3, volume: 27, anno: 2001,
pagine: 635 - 644
SICI:
0954-3899(200103)27:3<635:PHWS>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAVY-ION COLLISIONS; NUCLEUS-NUCLEUS COLLISIONS; QUARK-GLUON PLASMA; E+E ANNIHILATION; FREEZE-OUT; CHEMICAL EQUILIBRATION; HIGH-ENERGIES; MODEL; DYNAMICS; ENHANCEMENT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: Bass, SA Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA Michigan State Univ E Lansing MI USA 48824 Lansing, MI 48824 USA
Citazione:
S.A. Bass et al., "Probing hadronization with strangeness", J PHYS G-NU, 27(3), 2001, pp. 635-644

Abstract

A novel state of matter has been hypothesized to exist during the early stage of relativistic heavy-ion collisions, with normal hadrons not appearinguntil several fin c(-1) after the start of the reaction. Radial flow of multi-strange baryons is shown to be a sensitive probe of the expansion of the deconfined phase prior to hadronization. Using a hybrid macroscopic/microscopic transport model we show that if at hadronization the system has beensignificantly out of chemical equilibrium, hadronic rescattering cannot drive the system towards full chemical equilibration. Furthermore, we suggesta novel model-independent observable, balance functions, to evaluate correlations between charges and their associated anticharges It is shown that balance functions are extremely sensitive to the time-scale of hadronization: late-stage hadronization is characterized by tightly correlated charge/anticharge pairs when measured as a function of relative rapidity.

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Documento generato il 30/03/20 alle ore 19:08:10