Constraints on $\Delta G$ through Longitudinal Double Spin Asymmetry Measurements of Inclusive Jet Production in Polarized p+p Collisions at 200 GeV

ORAL

Abstract

The STAR experiment at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory uses polarized pp collisions at a center of mass energy of $\sqrt{s} = 200$ GeV to determine the polarized gluon distribution in the proton via spin asymmetry measurements. The inclusive jet channel is particularly robust due to its large cross-sections and relative independence from fragmentation functions. Data were collected during 2006, at sampled luminosity of $\sim$\,6 pb$^{-1}$, with 60\% beam polarization. We present run 2006 analysis progress for the double longitudinal spin asymmetry for inclusive jet production at mid-rapidity, along with results from run 2005. Comparisons to theoretical calculations using deep-inelastic scattering parameterization for gluon polarization in the nucleon are also presented.

Authors

  • Murad Sarsour

    Texas A\&M University