ВУЗ:
Составители:
ǫ
v
2
(η =
0)/ǫ
1/S dN
ch
/dy
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-2
(fmη/d
ch
) dN
T
(1/A
0 5 10 15 20 25 30
part
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2
v
0.04
0.1
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hydro limit (QGP-EoS)
hydro limit (H-EoS)
STAR AuAu-200 GeV
PHOBOS AuAu-200 GeV
STAR AuAu-130 GeV
STAR AuAu-62.4 GeV
STAR CuCu-200 GeV
PHOBOS CuCu-200 GeV
STAR CuCu-62.4 GeV
PHOBOS CuCu-62.4 GeV
NA49 AuAu-17.3 GeV
NA49 AuAu-8.8 GeV
BNL-E877 -5.0 GeV
v
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(η = 0)/ǫ 1/S dN
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/dy
v
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/ǫ
ñòè äâóõ ÿäåð è ïðîñòðàíñòâåííîãî ýêñöåíòðèñèòåòà ǫ ýòîé ïî- âåðõíîñòè. C ýòèìè ïåðåìåííûìè äàííûå îá îòíîøåíèè v2 (η = 0)/ǫ îò AGS ê RHIC ïîêàçûâàþò óíèâåðñàëüíóþ ëèíåéíóþ çà- âèñèìîñòü îò 1/S dN ch /dy (ðèñ. 13). 0.4 v2/ εpart hydro limit (QGP-EoS) 0.3 hydro limit (H-EoS) 0.2 STAR AuAu-200 GeV PHOBOS AuAu-200 GeV 0.1 STAR AuAu-130 GeV STAR AuAu-62.4 GeV STAR CuCu-200 GeV NA49 AuAu-17.3 GeV PHOBOS CuCu-200 GeV NA49 AuAu-8.8 GeV STAR CuCu-62.4 GeV BNL-E877 -5.0 GeV PHOBOS CuCu-62.4 GeV 0.04 0 5 10 15 20 25 30 (1/A ) dN /dη (fm-2) T ch èñ. 13: Çàâèñèìîñòü îòíîøåíèÿ ýëëèïòè÷åñêîãî ïîòîêà ê íà÷àëüíîìó çíà÷åíèþ ýêñöåíòðèñèòåòà v2 (η = 0)/ǫ îò 1/S dN ch /dy . Ïðè îïèñàíèè ðîæäåííîé ïðè ñòîëêíîâåíèè òÿæåëûõ èîíîâ ÊÕÄ ìàòåðèè â òåðìèíàõ èäåàëüíîé æèäêîñòè âûÿñíèëîñü, ÷òî ýòà ëèíåéíàÿ çàâèñèìîñòü âûïîëàæèâàåòñÿ ïðè ýíåðãèÿõ RHIC. Òàêèì îáðàçîì, çäåñü òàê æå, êàê è äëÿ äðóãèõ êëàññîâ èçìå- ðåíèé, íàèâíàÿ ýêñòðàïîëÿöèÿ ýòèõ äàííûõ îò RHIC ê LHC íå áóäåò ñîîòâåòñòâîâàòü äèíàìè÷åñêîé ìîäåëè ðàñøèðÿþùåéñÿ æèäêîñòè, ïðåäíàçíà÷àåìîé äëÿ îïèñàíèÿ ýëëèïòè÷åñêîãî ïî- òîêà v2 . Ñ äðóãîé ñòîðîíû, ñóùåñòâóþò ìîäåëè, êîòîðûå ìîãóò îáúÿñíèòü äàëüíåéøèé ðîñò v2 /ǫ çà ñ÷åò íåðàâíîâåñíûõ ÿâëå- íèé â íà÷àëüíîì ñîñòîÿíèè [47℄ èëè çà ñ÷åò èçìåíåíèÿ îòíî- ñèòåëüíîãî âêëàäà àäðîííûõ è ïàðòîííûõ ïåðåðàññåÿíèé [57℄, 31
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