Non-flow correlations and elliptic flow fluctuations in Au+Au collisions at sqrt(s_NN)=200GeV

PHOBOS Collaboration: B. Alver , B. B. Back , M. D. Baker , M. Ballintijn , D. S. Barton , R. R. Betts , A. A. Bickley , R. Bindel

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W. Busza A. Carroll Z. Chai V. Chetluru M. P. Decowski E. Garcia T. Gburek N. George K. Gulbrandsen C. Halliwell J. Hamblen I. Harnarine M. Hauer C. Henderson D. J. Hofman R. S. Hollis R. Holyinski B. Holzman A. Iordanova E. Johnson J. L. Kane N. Khan P. Kulinich C. M. Kuo W. Li W. T. Lin C. Loizides S. Manly A. C.Mignerey R. Nouicer A. Olszewski R. Pak C. Reed E. Richardson C. Roland G. Roland J. Sagerer H. Seals I. Sedykh C. E. Smith M. A. Stankiewicz P. Steinberg G. S. F. Stephans A. Sukhanov A. Szostak M. B.Tonjes A. Trzupek C. Vale G. J. van Nieuwenhuizen S. S. Vaurynovich R. Verdier G. I. Veres P. Walters E. Wenger D. Willhelm F. L. H. Wolfs B. Wosiek K. Wozniak S. Wyngaardt B. Wyslouch

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keywords fluctuationscorrelationsnon-flowcollisionsellipticevent-by-eventflowmeasured

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We present first results on event-by-event elliptic flow fluctuations in nucleus-nucleus collisions corrected for effects of non-flow correlations where the magnitude of non-flow correlations has been independently measured in data. Over the measured range in centrality, we see large relative fluctuations of 25-50%. The results are consistent with predictions from both color glass condensate and Glauber type initial condition calculations of the event-by-event participant eccentricity fluctuations.

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Non-flow correlations and elliptic flow fluctuations in Au+Au collisions at sqrt(s_NN)=200GeV

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