Longitudinal Double Spin Asymmetry in Inclusive Jet Production atSTAR
Conference
·
OSTI ID:927821
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.
- Research Organization:
- COLLABORATION - University ofMinnesota
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 927821
- Report Number(s):
- LBNL--61701; BnR: KB0201022
- Country of Publication:
- United States
- Language:
- English
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Longitudinal Double Spin Asymmetry in Inclusive Jet Production at STAR
MEASUREMENT OF THE DOUBLE LONGITUDINAL SPIN ASYMMETRY IN INCLUSIVE JET PRODUCTION IN POLARIZED P+P COLLISIONS AT S**(1/2) = 200 GEV.
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Mon Oct 24 00:00:00 EDT 2005
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OSTI ID:876637
Longitudinal Double-Spin Asymmetry and Cross Section for Inclusive Jet Production in Polarized Proton Collisions at {radical}(s)=200 GeV
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Thu Dec 21 23:00:00 EST 2006
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OSTI ID:20861514