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Multiparticle angular correlations: a probe for the sQGP at RHIC

W. G. Holzmann·N. N. Ajitanand·J. M. Alexander·P. Chung·M. Issah·R. A. Lacey·A. Taranenko·A. Shevel
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Abstract

A novel decomposition technique is used to extract the centrality dependence of di-jet properties and yields from azimuthal correlation functions obtained in Au+Au collisions at $\sqrt{s_{_{\rm NN}}}$=200 GeV. The width of the near-side jet shows very little dependence on centrality. In contrast, the away-side jet indicates substantial broadening as well as hints for for a local minimum at $Δϕ=π$ for central and mid-central events. The yield of jet-pairs (per trigger particle) slowly increases with centrality for both the near- and away-side jets. These observed features are compatible with several recent theoretical predictions of possible modifications of di-jet fragmentation by a strongly interacting medium. Several new experimental approaches, including the study of flavor permutation and higher order multi-particle correlations, that might help to distinguish between different theoretical scenarios are discussed.

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W. G. Holzmann, N. N. Ajitanand, J. M. Alexander, P. Chung, M. Issah, R. A. Lacey, A. Taranenko, A. Shevel. 2005-08-10. Multiparticle angular correlations: a probe for the sQGP at RHIC. https://doi.org/10.1088/1742-6596%2F27%2F1%2F009

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