Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2007-01-31
Physics
Nuclear Physics
Nuclear Experiment
Talk given at the International Workshop on Hadron Physics and Property of High Baryon Density Matter, November 22-25, 2006, X
Scientific paper
We present the Anti-Lambda hyperon global polarization in Au+Au collisions at sqrt(s_NN) = 62 GeV and 200 GeV measured with the STAR detector at RHIC. The observed Anti-Lambda hyperon global polarization is consistent with zero, what is in agreement with recent measurements of Lambda global polarization, as well as phi(1020) and K*0(892) vector mesons spin alignment with respect to the reaction plane. The possible dependence of the global polarization on relative azimuthal angle between the orbital momentum of the system and the hyperon 3-momentum is discussed. The corresponding systematic uncertainty due to detector acceptance is found to be less than 20%.
for the STAR Collaboration
Selyuzhenkov Ilya
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