Počet záznamů: 1

Elliptic flow from two- and four-particle correlations in Au+Au collisions at root s(NN)=130 GeV

SYSNO ASEP	0185730
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Ostatní články
Název	Elliptic flow from two- and four-particle correlations in Au+Au collisions at root s(NN)=130 GeV
Tvůrce(i)	Adler, C. (DE) Ahammed, Z. (IN) Allgower, C. (DE) Amonett, J. (DE) Anderson, B. D. (DE) Anderson, M. (DE) Šumbera, Michal (UJF-V)_{RID, ORCID, SAI} Zborovský, Imrich (UJF-V)_{RID, ORCID, SAI}
Zdroj.dok.	Physical Review. C - ISSN 0556-2813 Roč. 66, č. 3 (2002), s. 034904
Poč.str.	1 s.
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	heavy-ion collisions ; phase-transition
Vědní obor RIV	BF - Elementární částice a fyzika vys. energií
CEP	ME 475 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
CEZ	AV0Z1048901 - UJF-V
Anotace	Elliptic flow holds much promise for studying the early-time thermalization attained in ultrarelativistic nuclear collisions. Flow measurements also provide a means of distinguishing between hydrodynamic models and calculations which approach the low density (dilute gas) limit. Among the effects that can complicate the interpretation of elliptic flow measurements are azimuthal correlations that are unrelated to the reaction plane (nonflow correlations). Using data for Au + Au collisions at roots(NN)=130 GeV from the STAR time projection chamber, it is found that four-particle correlation analyses can reliably separate flow and nonflow correlation signals. The latter account for on average about 15% of the observed second-harmonic azimuthal correlation, with the largest relative contribution for the most peripheral and the most central collisions. The results are also corrected for the effect of flow variations within centrality bins. This effect is negligible for all but the most central bin, where the correction to the elliptic flow is about a factor of 2. A simple new method for two-particle flow analysis based on scalar products is described. An analysis based on the distribution of the magnitude of the flow vector is also described.
Pracoviště	Ústav jaderné fyziky
Kontakt	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Rok sběru	2004

Počet záznamů: 1