Energy and system-size dependence of two- and four-particle nu(2) measurements in heavy-ion collisions at root S-NN=62.4 and 200 GeV and their implications on flow fluctuations and nonflow

Agakishiev, G.; Aggarwal, M. M.; Ahammed, Z.; Alakhverdyants, A. V.; Alekseev, I.; Alford, J.; Anderson, B. D.; Anson, C.; Bielčík, J.; Bielčíková, Jana; Chaloupka, Petr; Chung, Paul; Hajková, O.; Kapitán, Jan; Kushpil, Vasilij; Krus, M.; Pachr, M.; Rusňák, Jan; Šumbera, Michal; Tlustý, David

doi:https://dx.doi.org/10.1103/PhysRevC.86.014904

Počet záznamů: 1

Energy and system-size dependence of two- and four-particle nu(2) measurements in heavy-ion collisions at root S-NN=62.4 and 200 GeV and their implications on flow fluctuations and nonflow

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SYSNO ASEP	0385115
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Energy and system-size dependence of two- and four-particle nu(2) measurements in heavy-ion collisions at root S-NN=62.4 and 200 GeV and their implications on flow fluctuations and nonflow
Tvůrce(i)	Agakishiev, G. (RU) Aggarwal, M. M. (IN) Ahammed, Z. (IN) Alakhverdyants, A. V. (RU) Alekseev, I. (RU) Alford, J. (US) Anderson, B. D. (US) Anson, C. (US) Bielčík, J. (CZ) Bielčíková, Jana (UJF-V)_{RID, ORCID, SAI} Chaloupka, Petr (UJF-V)_RID Chung, Paul (UJF-V) Hajková, O. (CZ) Kapitán, Jan (UJF-V) Kushpil, Vasilij (UJF-V)_{ORCID, SAI} Krus, M. (CZ) Pachr, M. (CZ) Rusňák, Jan (UJF-V)_{RID, ORCID, SAI} Šumbera, Michal (UJF-V)_{RID, ORCID, SAI} Tlustý, David (UJF-V)
Celkový počet autorů	366
Zdroj.dok.	Physical Review. C - ISSN 0556-2813 Roč. 86, č. 1 (2012), s. 014904
Poč.str.	15 s.
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	heavy ion collision ; particle production ; flow measurement
Vědní obor RIV	BG - Jaderná, atomová a mol. fyzika, urychlovače
CEP	LA08015 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
Institucionální podpora	UJF-V - RVO:61389005
UT WOS	000306316700006
DOI	10.1103/PhysRevC.86.014904
Anotace	We present STAR measurements of azimuthal anisotropy by means of the two- and four-particle cumulants nu(2) (nu(2){2} and nu(2){4}) for Au + Au and Cu + Cu collisions at center-of-mass energies root S-NN = 62.4 and 200 GeV. The difference between nu(2){2}(2) and nu(2){4}(2) is related to nu(2) fluctuations (sigma(nu 2)) and nonflow (delta(2)). We present an upper limit to sigma(nu 2)/nu 2. Following the assumption that eccentricity fluctuations sigma(epsilon) dominate nu(2) fluctuations nu(2)/sigma nu(2) approximate to epsilon/sigma epsilon we deduce the nonflow implied for several models of eccentricity fluctuations that would be required for consistency with nu(2){2} and nu(2){4}. We also present results on the ratio of nu(2) to eccentricity.
Pracoviště	Ústav jaderné fyziky
Kontakt	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Rok sběru	2013

Počet záznamů: 1