We present the first inclusive jet longitudinal double spin asymmetry ALLand differential cross-section measurement from STAR. This analysis reflects 1 pb-1of polarized p¯p¯ data taken at vs = 200 GeV with beam polarizations of 30-45% in years 2003 and 2004. Agreement between the measured differential cross-section and next-to-leading order (NLO) calculations validate the interpretation of the asymmetry results within the framework of perturbative Quantum Chromodynamics (pQCD). ALLis compared to NLO pQCD calculations, which incorporate several possible gluon helicity distributions, and is shown to disfavor the maximum gluon scenario.
|Number of pages||4|
|State||Published - 2006|
|Event||41st Rencontres de Moriond on QCD and High Energy Hadronic Interactions 2006 - La Thuile, Italy|
Duration: Mar 18 2006 → Mar 25 2006
|Conference||41st Rencontres de Moriond on QCD and High Energy Hadronic Interactions 2006|
|Period||3/18/06 → 3/25/06|
Bibliographical notePublisher Copyright:
© 2006 by Rencontres de Moriond.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics