Isolation of flow and nonflow correlations by two- and four-particle cumulant measurements of azimuthal harmonics in sNN=200GeV Au+Au collisions
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Journal ArticleDate
2015-05-08Author
Abdelwahab, NMAdamczyk, L
Adkins, JK
Agakishiev, G
Aggarwal, MM
Ahammed, Z
Alekseev, I
Alford, J
Anson, CD
Aparin, A
Arkhipkin, D
Aschenauer, EC
Averichev, GS
Banerjee, A
Beavis, DR
Bellwied, R
Bhasin, A
Bhati, AK
Bhattarai, P
Bielcik, J
Bielcikova, J
Bland, LC
Bordyuzhin, IG
Borowski, W
Bouchet, J
Brandin, AV
Brovko, SG
Bültmann, S
Bunzarov, I
Burton, TP
Butterworth, J
Caines, H
de la Barca Sánchez, CM
Campbell, JM
Cebra, D
Cendejas, R
Cervantes, MC
Chaloupka, P
Chang, Z
Chattopadhyay, S
Chen, HF
Chen, JH
Chen, L
Cheng, J
Cherney, M
Chikanian, A
Christie, W
Codrington, MJM
Contin, G
Cramer, JG
Crawford, HJ
Cui, X
Das, S
Davila Leyva, A
DeSilva, LC
Debbe, RR
Dedovich, TG
Deng, J
Derevschikov, AA
de Souza, RD
Di Ruzza, B
Didenko, L
Dilks, C
Ding, F
Djawotho, P
Dong, X
Drachenberg, JL
Draper, JE
Du, CM
Dunkelberger, LE
Dunlop, JC
Efimov, LG
Engelage, J
Engle, KS
Eppley, G
Eun, L
Evdokimov, O
Eyser, O
Fatemi, R
Fazio, S
Fedorisin, J
Filip, P
Fisyak, Y
Flores, CE
Gagliardi, CA
Gangadharan, DR
Garand, D
Geurts, F
Gibson, A
Girard, M
Gliske, S
Greiner, L
Grosnick, D
Gunarathne, DS
Guo, Y
Gupta, A
Gupta, S
Guryn, W
Haag, B
Hamed, A
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http://hdl.handle.net/20.500.12613/5799
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10.1016/j.physletb.2015.04.033Abstract
© 2015 The Authors. A data-driven method was applied to Au+Au collisions at sNN=200GeV made with the STAR detector at RHIC to isolate pseudorapidity distance δη-dependent and δη-independent correlations by using two- and four-particle azimuthal cumulant measurements. We identified a δη-independent component of the correlation, which is dominated by anisotropic flow and flow fluctuations. It was also found to be independent of η within the measured range of pseudorapidity |η|<1. In 20-30% central Au+Au collisions, the relative flow fluctuation was found to be 34%±2%(stat.)±3%(sys.) for particles with transverse momentum p<inf>T</inf> less than 2 GeV/c. The δη-dependent part, attributed to nonflow correlations, is found to be 5%±2%(sys.) relative to the flow of the measured second harmonic cumulant at |δη|>0.7.Citation to related work
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Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy PhysicsADA compliance
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http://dx.doi.org/10.34944/dspace/5781
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