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Using a multiphase transport model, we study three-particle mixed harmonic correlations in relativistic heavy ion collisions by considering the observable Cm,n,m+n=《cos⁡(mϕ1+nϕ2−(m+n)ϕ3)》, where ϕ1,2,3 are azimuthal angles of all particle triplets. We find that except for C123, our results on the centrality dependence of C112, C224 and C235 as well as the relative pseudorapidity dependence of C123 and C224 in Au + Au collisions at s=200 GeV agree reasonable well with the experimental data from the STAR Collaboration. We discuss the implications of our results.

We present STAR measurements of the charge-dependent three-particle correlator γ a , b = 〈 cos ⁡ ( ϕ 1 a + ϕ 2 b − 2 ϕ 3 ) 〉 / v 2 { 2 } and elliptic flow v 2 { 2 } in U+U, Au+Au and p+Au collisions at RHIC. The difference Δ γ = γ ( opposite-sign ) − γ ( same-sign ) measures charge separation across the reaction plane, a predicted signal of the Chiral Magnetic Effect (CME). Although charge separation has been observed, it has been argued that the measured separation can also be explained by elliptic flow related backgrounds. In order to separate the two effects we perform measurements of the γ -correlator where background expectations differ from magnetic field driven effects. A differential measurement of γ with the relative pseudorapidity (Δ η ) between the first and second particles indicate that Δ γ in peripheral A+A and p+A collisions are dominated by short-range correlations in Δ η . However, a relatively wider component of the correlation in Δ η tends to vanish the same way as projected magnetic field as predicted by MC-Glauber simulations. [ABSTRACT FROM AUTHOR]

Analysis of three-particle correlations is performed on the basis of simulation data of atomic dynamics in liquid and amorphous aluminium. A three-particle correlation function is introduced to characterize the relative positions of various three particles—the so-called triplets. Various configurations of triplets are found by calculation of pair and three-particle correlation functions. It was found that in the case of liquid aluminium with temperatures 1000 K, 1500 K, and 2000 K the three-particle correlations are more pronounced within the spatial scales, comparable with a size of the second coordination sphere. In the case of amorphous aluminium with temperatures 50 K, 100 K, and 150 K these correlations in the mutual arrangement of three particles are manifested up to spatial scales, which are comparable with a size of the third coordination sphere. Temporal evolution of three-particle correlations is analyzed by using a time-dependent three-particle correlation function, for which an integro-differential equation of type of the generalized Langevin equation is output with help of projection operators technique. A solution of this equation by means of mode-coupling theory is compared with our simulation results. It was found that this solution correctly reproduces the behavior of the time-dependent three-particle correlation functions for liquid and amorphous aluminium. [ABSTRACT FROM AUTHOR]

Modifications of jet properties resulting from the coupling of jets to the strongly interacting matter produced in RHIC collisions are of great current interest. In recent work, the PHENIX collaboration has applied a novel technique to the analysis of two-particle azimuthal correlations which extinguishes the harmonic part of the underlying event revealing the true jet shape. Recent extensions of the method to three-particle correlations allow for a more revealing study of jet topologies in Au+Au collisions at (√ s NN=200 GeV). [ABSTRACT FROM AUTHOR]