Recent Longitudinal Spin Asymmetry Measurements for Inclusive Jet Production at STAR Original Research Article

We present measurements of the longitudinal spin asymmetry, ALL, for the inclusive jet signal at STAR. The data presented here are mid-rapidity jets in the transverse momentum range of 5 < pT < 35 GeV/c and come from polarized proton-proton collisions at center of mass energies of View the MathML source. We compare our measured ALL values to predictions derived from various parameterizations of the polarized gluon distribution function. The results are shown to provide significant constraints for allowable gluon parameterizations within the measurementʹs kinematic Bjorken-x range of 0.03 < x < 0.3.