Longitudinal Double Spin Asymmetry in Inclusive Jet Production atSTAR

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This contribution reports on the first measurement of the longitudinal double-spin asymmetry A{sub LL} for the inclusive production of jets in polarized proton-proton collisions at {radical}s = 200 GeV. The data were collected with STAR at RHIC in the years 2003 and 2004, and correspond to a sampled integrated luminosity of 0.3 pb{sup -1} with beam polarizations up to 45%. The results on A{sub LL} cover jet transverse momenta 5 < p{sub T} < 17 GeV/c and agree with perturbative QCD evaluations based on deep-inelastic scattering parametrizations for the gluon polarization in the proton. The results disfavor large positive gluon ... continued below

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Kowalik, Katarzyna & Collaboration, STAR August 15, 2006.

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Description

This contribution reports on the first measurement of the longitudinal double-spin asymmetry A{sub LL} for the inclusive production of jets in polarized proton-proton collisions at {radical}s = 200 GeV. The data were collected with STAR at RHIC in the years 2003 and 2004, and correspond to a sampled integrated luminosity of 0.3 pb{sup -1} with beam polarizations up to 45%. The results on A{sub LL} cover jet transverse momenta 5 < p{sub T} < 17 GeV/c and agree with perturbative QCD evaluations based on deep-inelastic scattering parametrizations for the gluon polarization in the proton. The results disfavor large positive gluon polarization in the polarized proton.

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  • Conference on the Intersections of Particle andNuclear Physics, Puerto Rico, May 30 - June 03,2006

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  • Report No.: LBNL--61701
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 927821
  • Archival Resource Key: ark:/67531/metadc898045

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  • August 15, 2006

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  • Sept. 27, 2016, 1:39 a.m.

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Kowalik, Katarzyna & Collaboration, STAR. Longitudinal Double Spin Asymmetry in Inclusive Jet Production atSTAR, article, August 15, 2006; (digital.library.unt.edu/ark:/67531/metadc898045/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.