Method for determining event-by-event elliptic flow fluctuations based on the first-order event plane in heavy-ion collisions

Gang Wang, Declan Keane, Aihong Tang, and Sergei A. Voloshin

Phys. Rev. C 76, 024907 – Published 20 August 2007

Abstract

A new method is presented for determining event-by-event fluctuations of elliptic flow, $v_{2}$ , using first-order event planes. By studying the event-by-event distributions of $v_{2}$ observables and first-order event-plane observables, average flow $〈 v_{2} 〉$ and event-by-event flow fluctuations can be separately determined, making appropriate allowance for the effects of finite multiplicity and nonflow. The method has been tested with Monte Carlo simulations. The connection between flow fluctuations and fluctuations of the initial-state participant eccentricity is discussed.

Received 17 April 2007

DOI:https://doi.org/10.1103/PhysRevC.76.024907

Authors & Affiliations

Gang Wang¹, Declan Keane², Aihong Tang³, and Sergei A. Voloshin⁴

¹University of California, Los Angeles, California 90095, USA
²Kent State University, Kent, Ohio 44242, USA
³Brookhaven National Laboratory, Upton, New York 11973, USA
⁴Wayne State University, Detroit, Michigan 48201, USA

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Issue

Vol. 76, Iss. 2 — August 2007

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Physical Review C

covering nuclear physics