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 language | Undefined/Unknown |
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Pages (from-to) | 052302-1-052302-7 |
Number of pages | 7 |
Journal | Physical Review Letters |
Volume | 102 |
Issue number | 5 |
Publication status | Published - 2009 |