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Azimuthal asymmetry of neutral pion emission in Au+Au reactions at 1 GeV/u

Conference ·
OSTI ID:64045
; ; ; ; ;  [1]
  1. Kernfysisch Versneller Instituut, Groningen (Netherlands)
The azimuthal angle distributions of neutral pions at midrapidity from Au+Au reactions at 1 GeV/u incident energy have been measured. An enhanced emission of {pi}{sup 0} perpendicular to the reaction plane is observed. The azimuthal asymmetry is dependent on the {pi}{sup 0} momentum. The integrated yield of {pi}{sup 0} emission in-the-reaction-plane is suppressed by 10% with respect to the out-of-plane yield. This fact suggests that the main reason for the observed azimuthal asymmetry is the enhanced absorption of fast pions in the reaction plane by the spectator matter.
Research Organization:
Lawrence Berkeley Lab., CA (United States)
OSTI ID:
64045
Report Number(s):
LBL--35984; CONF-9310315--; ON: DE95000804
Country of Publication:
United States
Language:
English

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