Gluon polarization measurements with inclusive jets at STAR
Abstract
At RHIC kinematics, polarized jet hadroproduction is dominated by gg and qg scattering, making the jet double longitudinal spin asymmetry, ALL, sensitive to gluon polarization in the nucleon. I will present STAR results of ALL from inclusive jet measurements for the RHIC 2006 run at center-of-mass energy 200 GeV. I will also discuss the current status of the analysis of data from the 2009 run, also at center-of-mass energy 200 GeV. The results are compared with theoretical calculations of ALL based on various models of the gluon density in the nucleon. The STAR data place significant constraints on allowed theoretical models.
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