Indications of conical emission of charged hadrons at the BNL relativistic heavy ion collider

B.I. Abelev, Y. Bai, M.A.J. Botje, F. Benedosso, E Braidot, A. Mischke, T. Peitzmann, M.J. Russcher, R.J.M. Snellings, M. van Leeuwen

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Abstract

Three-particle azimuthal correlation measurements with a high transverse momentum trigger particle are reported for pp, d+Au, and Au+Au collisions at √sNN=200  GeV by the STAR experiment. Dijet structures are observed in pp, d+Au and peripheral Au+Au collisions. An additional structure is observed in central Au+Au data, signaling conical emission of correlated charged hadrons. The conical emission angle is found to be θ=1.37±0.02(stat)-0.07+0.06(syst), independent of p⊥.
Original languageUndefined/Unknown
Pages (from-to)052302-1-052302-7
Number of pages7
JournalPhysical Review Letters
Volume102
Issue number5
Publication statusPublished - 2009

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