"Indications of Conical Emission of Charged Hadrons at the BNL Relativi" by David Grosnick, Donald D. Koetke et al.
 

Indications of Conical Emission of Charged Hadrons at the BNL Relativistic Heavy Ion Collider

Document Type

Article

Publication Date

2-2009

Abstract

Three-particle azimuthal correlation measurements with a high transverse momentum trigger particle are reported for pp, d + Au, and Au + Au collisions at root(NN)-N-S = 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 theta = 1.37 +/- 0.02(stat)(-0.07)(+0.06)(syst), independent of p perpendicular to.

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