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Titolo: THE TIMEDELAY SIGNATURE OF QUARKGLUON PLASMA FORMATION IN RELATIVISTIC NUCLEAR COLLISIONS
Autore: RISCHKE DH; GYULASSY M;
 Indirizzi:
 COLUMBIA UNIV,DEPT PHYS,PUPIN PHYS LABS,538 W 120TH ST NEW YORK NY 10027
 Titolo Testata:
 Nuclear physics. A
fascicolo: 4,
volume: 608,
anno: 1996,
pagine: 479  512
 SICI:
 03759474(1996)608:4<479:TTSOQP>2.0.ZU;2S
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 HEAVYION COLLISIONS; QCD PHASETRANSITION; HIGHENERGY COLLISIONS; JPSISUPPRESSION; PION INTERFEROMETRY; DILEPTON EMISSION; AU+AU COLLISIONS; TRANSVERSEFLOW; HADRONIC GAS; MATTER;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Science Citation Index Expanded
 Citazioni:
 61
 Recensione:
 Indirizzi per estratti:



 Citazione:
 D.H. Rischke e M. Gyulassy, "THE TIMEDELAY SIGNATURE OF QUARKGLUON PLASMA FORMATION IN RELATIVISTIC NUCLEAR COLLISIONS", Nuclear physics. A, 608(4), 1996, pp. 479512
Abstract
The hydrodynamic expansion of quarkgluon plasmas with spherical and longitudinally boostinvariant geometries is studied as a function of the initial energy density. The sensitivity of the collective flow pattern to uncertainties in the nuclear matter equation of state is explored. We concentrate on the effect of a possible finite width, Delta T similar to 0.1T(c), of the transition region between quarkgluon plasma and hadronic phase. Although slow deflagration solutions that act tostall the expansion do not exist for Delta T > 0.08T(c), we find, nevertheless, that the equation of state remains sufficiently soft in thetransition region to delay the propagation of ordinary rarefaction waves for a considerable time. We compute the dependence of the pioninterferometry correlation function on Delta T, since this is the most promising observable for timedelayed expansion. The signature of time delay, proposed by Pratt and Bertsch, is an enhancement of the ratio ofthe inverse width of the pion correlation function in outdirection to that in sidedirection. One of our main results is that this genericsignature of quarkgluon plasma formation is rather robust to the uncertainties in the width of the transition region. Furthermore, for longitudinal boostinvariant geometries, the signal is likely to be maximized around RHIC energies, root s similar to 200A . GeV.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 05:56:07