The effect of triangular flow on di-hadron azimuthal correlations in relativistic heavy ion collisions - INSPIRE

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The effect of triangular flow on di-hadron azimuthal correlations in relativistic heavy ion collisions

Jun Xu
(
- Texas A-M
)
,
Che Ming Ko
(
- Texas A-M, Cyclotron Inst. and
- Texas A-M
)

Nov, 2010

5 pages

Published in:

Phys.Rev.C 83 (2011) 021903

e-Print:

1011.3750 [nucl-th]

DOI:

10.1103/PhysRevC.83.021903

View in:

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Abstract: (arXiv)

Using the AMPT model for relativistic heavy ion collisions, we have studied the di-hadron azimuthal angular correlations triggered by emitted jets in Au+Au collisions at center of mass energy

\sqrt{s_{NN}}=200

GeV and impact parameter

b=8

fm. A double-peak structure for the associated particles at the away side of trigger particles is obtained after subtracting background correlations due to the elliptic flow. Both the near-side peak and the away-side double peaks in the azimuthal angular correlations are, however, significantly suppressed (enhanced) in events of small (large) triangular flow, which are present as a result of fluctuations in the initial collision geometry. After subtraction of background correlations due to the triangular flow, the away-side double peaks change into a single peak with broad shoulders on both sides. The away side of the di-hadron correlations becomes essentially a single peak after further subtraction of higher-order flows.

Note:

5 pages, 5 figures, version accepted by Rapid Communication in Physical Review C

24.10.Lx
12.38.Mh
25.75.-q
heavy ion: scattering
parton: angular correlation
impact parameter
elliptic flow
string
gold
dihadron: angular correlation

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