Longitudinal Double-Spin Asymmetry for Inclusive Jet Production in p+p Collisions at s=200GeV

B. I. Abelev et al. (STAR Collaboration)
Phys. Rev. Lett. 100, 232003 – Published 13 June 2008

Abstract

We report a new STAR measurement of the longitudinal double-spin asymmetry ALL for inclusive jet production at midrapidity in polarized p+p collisions at a center-of-mass energy of s=200GeV. The data, which cover jet transverse momenta 5<pT<30GeV/c, are substantially more precise than previous measurements. They provide significant new constraints on the gluon spin contribution to the nucleon spin through the comparison to predictions derived from one global fit to polarized deep-inelastic scattering measurements.

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  • Received 12 October 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.232003

©2008 American Physical Society

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Vol. 100, Iss. 23 — 13 June 2008

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