Hydrodynamic elliptic and triangular flow in Pb–Pb collisions at sNN=2.76A TeV

Qiu, Zhi; Shen, Chun; Heinz, Ulrich

doi:10.1016/j.physletb.2011.12.041

Hydrodynamic elliptic and triangular flow in Pb–Pb collisions at sNN =2.76A TeV

Journal Article · Mon Jan 16 04:00:00 EST 2012 · Physics Letters. B

DOI:https://doi.org/10.1016/j.physletb.2011.12.041· OSTI ID:1425439

Qiu, Zhi ^[1]; Shen, Chun ^[1]; Heinz, Ulrich ^[1]

The Ohio State Univ., Columbus, OH (United States). Dept. of Physics

It is shown that a simultaneous comparison of both elliptic and triangular flow from (2+1)-dimensional viscous fluid dynamics with recent measurements in Pb+Pb collisions at the Large Hadron Collider (LHC) favors a small specific shear viscosity (η/s)_QGP ≈ 1/(4π) for the quark-gluon plasma. By using this viscosity value, the relative magnitude of the elliptic and triangular flow is well described with Monte-Carlo Glauber (MC-Glauber) initial conditions while Monte-Carlo Kharzeev-Levin-Nardi (MC-KLN) initial conditions require twice as large viscosity to reproduce the elliptic flow and then underpredict triangular flow by about 30%.

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC); European Organization for Nuclear Research (CERN), Geneva (Switzerland)

DOE Contract Number:: AC02-05CH11231; SC0004286; SC0004104

OSTI ID:: 1425439

Journal Information:: Physics Letters. B, Journal Name: Physics Letters. B Journal Issue: 1 Vol. 707; ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

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