Nuclear Physics Seminar

"Beam Energy Dependence of the Third Harmonic of Azimuthal Correlations in Au+Au Collisions at RHIC"

Presented by Paul Sorensen, BNL

Tuesday, March 1, 2016, 11:00 am — Small Seminar Room, Bldg. 510

I will present results from a harmonic decomposition of two-particle azimuthal correlations measured with the STAR detector in Au+Au collisions for energies ranging from 7.7 GeV to 200 GeV. v3 is studied as a function of the pseudorapidity di erence between particle pairs. Non-zero v3 is directly related to the previously observed large- narrow- ridge correlations and has been shown in models to be sensitive to the existence of a low viscosity Quark Gluon Plasma (QGP) phase. For sufficiently central collisions, v3 persist down to an energy of 7.7 GeV suggesting that QGP may be created even in these low energy collisions. In peripheral collisions at these low energies however, v3 is consistent with zero. When scaled by pseudorapidity density of charged particle multiplicity per participating nucleon pair, v3^2 for central collisions shows a minimum near 20 GeV.

Hosted by: Oleg Eyser

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