A Method for Measuring Event-by-Event Elliptic Flow Fluctuations with the First-Order Event Plane in Heavy-Ion Collisions

WANG Gang; Declan Keane; Aihong Tang; Sergei A

Chinese Physics C> 2007, Vol. 31> Issue(12) : 1165-1169

A Method for Measuring Event-by-Event Elliptic Flow Fluctuations with the First-Order Event Plane in Heavy-Ion Collisions

University of California, Los Angeles, California 90095, USA2 Kent State University,Kent, Ohio 44242, USA3 Brookhaven National Laboratory, Upton, New York 11973, USA4 Wayne State University, Detroit, Michigan 48201, USA

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A new method is presented for measuring event-by-event fluctuations of elliptic flow (v₂) using first-order event planes. By studying the event-by-event distributions of v₂ observables and first-order event-plane observables, average flow 〈v₂〉and event-by-event fluctuations with respect to that average can be separately determined, making appropriate allowance for the effects of finite multiplicity. The relation of flow fluctuations to eccentricity fluctuations in the initial-state participant region, as well as detector acceptance effects, are discussed.

References

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WANG Gang, Declan Keane, Aihong Tang and Sergei A. A Method for Measuring Event-by-Event Elliptic Flow Fluctuations with the First-Order Event Plane in Heavy-Ion Collisions[J]. Chinese Physics C, 2007, 31(12): 1165-1169.

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Received: 2007-07-17
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

A Method for Measuring Event-by-Event Elliptic Flow Fluctuations with the First-Order Event Plane in Heavy-Ion Collisions

University of California, Los Angeles, California 90095, USA2 Kent State University,Kent, Ohio 44242, USA3 Brookhaven National Laboratory, Upton, New York 11973, USA4 Wayne State University, Detroit, Michigan 48201, USA

Received Date: 2007-07-17

Accepted Date: 1900-01-01

Available Online: 2007-12-05

Abstract: A new method is presented for measuring event-by-event fluctuations of elliptic flow (v₂) using first-order event planes. By studying the event-by-event distributions of v₂ observables and first-order event-plane observables, average flow 〈v₂〉and event-by-event fluctuations with respect to that average can be separately determined, making appropriate allowance for the effects of finite multiplicity. The relation of flow fluctuations to eccentricity fluctuations in the initial-state participant region, as well as detector acceptance effects, are discussed.

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A Method for Measuring Event-by-Event Elliptic Flow Fluctuations with the First-Order Event Plane in Heavy-Ion Collisions

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A Method for Measuring Event-by-Event Elliptic Flow Fluctuations with the First-Order Event Plane in Heavy-Ion Collisions

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