Abstract
We present three-particle mixed-harmonic correlations 〈cos(mϕa+nϕb−(m+n)ϕc)〉 for harmonics m,n=1−3 for charged particles in sNN=200 GeV Au+Au collisions at RHIC. These measurements provide information on the three-dimensional structure of the initial collision zone and are important for constraining models of a subsequent low-viscosity quark–gluon plasma expansion phase. We investigate correlations between the first, second and third harmonics predicted as a consequence of fluctuations in the initial state. The dependence of the correlations on the pseudorapidity separation between particles show hints of a breaking of longitudinal invariance. We compare our results to a number of state-of-the art hydrodynamic calculations with different initial states and temperature dependent viscosities. These measurements provide important steps towards constraining the temperature dependent viscosity and longitudinal structure of the initial state at RHIC.
Highlights
AgakishievRight click to open a feedback form in a new tab to let us know how this document benefits you
Matter as hot and dense as the early universe microseconds after the Big Bang can be created by colliding heavy nuclei at high energies
Data from the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory and the Large Hadron Collider (LHC) at CERN have been arguably used to show that the quark gluon plasma (QGP) at these temperatures is a nearly perfect fluid with a shear viscosity-to-entropy density ratio (η/s) smaller than any other fluid known in nature [5,6,7,8,9,10,11,12,13]
Summary
Right click to open a feedback form in a new tab to let us know how this document benefits you Follow this and additional works at: https://uknowledge.uky.edu/physastron_facpub. M.; Aoyama, R.; Aparin, A.; Arkhipkin, D.; Aschenauer, E. S.; Bai, X.; Bairathi, V.; Behera, A.; Bellwied, R.; Bhasin, A.; Bhati, A. K.; Bhattarai, P.; Bielcik, J.; Bielcikova, J.; Bland, L. V.; Brown, D.; Fatemi, Renee H.; and Ramachandran, Suvarna, "Constraining the Initial Conditions and Temperature Dependent Viscosity with Three-Particle Correlations in Au+Au Collisions" (2019). We compare our results to a number of state-of-the art hydrodynamic calculations with different initial states and temperature dependent viscosities
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