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arXiv · 0902.1345

Recent Longitudinal Spin Asymmetry Measurements for Inclusive Jet Production at STAR

David Staszak
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Abstract

We present measurements of the longitudinal spin asymmetry, $A_{LL}$, 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 $\sqrt{s}=200$ GeV. We compare our measured $A_{LL}$ 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 measurement's kinematic Bjorken-x range of $0.03<x<0.3$.

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David Staszak. 2009-02-08. Recent Longitudinal Spin Asymmetry Measurements for Inclusive Jet Production at STAR. https://doi.org/10.1016/j.nuclphysa.2009.05.039

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