Transverse Polarization of $\Lambda$ Hyperons in Relativistic Au--Au Collisions at the AGS
Acta Physica Hungarica A) Heavy Ion Physics(2002)
摘要
We investigate the transverse polarization of Lambda hyperons produced in 11.6 A GeV/c Au-Au collisions at the AGS. Experiment E896 yields results in two independent detector systems, a Silicon Drift Detector Array at mid-rapidity and a Distributed Drift Chamber at forward rapidity. In this article we focus on the mid-rapidity measurements. The results reveal a dependence of the polarization on the transverse momentum and Feynman-x of the Lambda hyperons. The heavy-ion data are consistent with previous measurements in proton-proton and proton-nucleus collisions within statistical errors.
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关键词
hyperons,polarization,relativistic heavy-ion collisions,transverse momentum,Feynman-x,silicon drift detector array,AGS,BNL,E896
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