Indications of conical emission of charged hadrons at the BNL relativistic heavy ion collider
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Publication date
2009
Authors
Abelev, B.I.
Bai, Y.
Botje, M.A.J.
Benedosso, F.
Braidot, E
Mischke, A.
Peitzmann, T.
Russcher, M.J.
Snellings, R.J.M.
van Leeuwen, M.
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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⊥.
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Abelev, B I, Bai, Y, Botje, M A J, Benedosso, F, Braidot, E, Mischke, A, Peitzmann, T, Russcher, M J, Snellings, R J M & van Leeuwen, M 2009, 'Indications of conical emission of charged hadrons at the BNL relativistic heavy ion collider', Physical Review Letters, vol. 102, no. 5, pp. 052302-1-052302-7.