Constraining the initial conditions and temperature dependent viscosity with three-particle correlations in Au plus Au collisions



Adamczyk, L, Adkins, JK, Agakishiev, G, Aggarwal, MM, Ahammed, Z, Ajitanand, NN, Alekseev, I, Anderson, DM, Aoyama, R, Aparin, A
et al (show 333 more authors) (2019) Constraining the initial conditions and temperature dependent viscosity with three-particle correlations in Au plus Au collisions. PHYSICS LETTERS B, 790. pp. 81-88.

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Abstract

We present three-particle mixed-harmonic correlations $\la \cos (m\phi_a + n\phi_b - (m+n) \phi_c)\ra$ for harmonics $m,n=1-3$ for charged particles in $\sqrt{s_{NN}}=$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 transport and the longitudinal structure of the initial state at RHIC.

Item Type: Article
Additional Information: 8 pages, 4 figures, v2 : a new figure, texts & references added
Uncontrolled Keywords: nucl-ex, nucl-ex, nucl-th
Depositing User: Symplectic Admin
Date Deposited: 30 Apr 2019 10:26
Last Modified: 19 Jan 2023 00:52
DOI: 10.1016/j.physletb.2018.10.075
Open Access URL: https://doi.org/10.1016/j.physletb.2018.10.075
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3039051