ELLIPTIC FLOW, INITIAL ECCENTRICITY AND ELLIPTIC FLOW FLUCTUATIONS IN HEAVY ION COLLISIONS AT RHIC.
We present measurements of elliptic flow and event-by-event fluctuations established by the PHOBOS experiment. Elliptic flow scaled by participant eccentricity is found to be similar for both systems when collisions with the same number of participants or the same particle area density are compared. The agreement of elliptic flow between Au+Au and Cu+Cu collisions provides evidence that the matter is created in the initial stage of relativistic heavy ion collisions with transverse granularity similar to that of the participant nucleons. The event-by-event fluctuation results reveal that the initial collision geometry is translated into the final state azimuthal particle distribution, leading to an event-by-event proportionality between the observed elliptic flow and initial eccentricity.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 921929
- Report Number(s):
- BNL-79569-2007-CP; R&D Project: 08861; KB-02-01-021; TRN: US0800830
- Resource Relation:
- Conference: LAKE LOUISE WINTER INSTITUTE 2007; ALBERTA, CANADA; 20070219 through 20070224
- Country of Publication:
- United States
- Language:
- English
Similar Records
Event-by-event hydrodynamics and elliptic flow from fluctuating initial states
Eccentricity fluctuation effects on elliptic flow in relativistic heavy ion collisions