Regular Article – Experimental Physics
Identified two-hadron correlations at STAR using Λ, Λ̄, and K0 Short triggers with charged hadrons in Au + Au collisions at =200 GeV
School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
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Published online: 28 November 2006
Here we present initial studies of two-dimensional angular correlations of Λ, Λ̄, and K0 Short triggers with unidentified charged hadrons in Au+Au collisions at =200 GeV measured by STAR. Distributions of pseudo-rapidity difference, Δη, and azimuthal separation, Δφ, are constructed containing structures observed in unidentified hadron correlations, including a jet peak at small Δη-Δφ accompanied by a flow-like ridge extended over Δη. These features are studied as a function of centrality via integrated yields and fitting to projections onto Δη and Δφ axes. Yields are found to be consistent with unidentified correlation analyses, and no clear distinction is observed between the three species.
© Springer-Verlag Berlin Heidelberg, 2007