Indications of Conical Emission of Charged Hadrons at the BNL Relativistic Heavy Ion Collider
arXiv:0805.0622 · doi:10.1103/PhysRevLett.102.052302
Abstract
Three-particle azimuthal correlation measurements with a high transverse momentum trigger particle are reported for pp, d+Au, and Au+Au collisions at 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 1.37 +- 0.02(stat) +0.06-0.07(syst), independent of pt.
7 pages, 4 figures, 1 table
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