Double Helicity Asymmetry and Cross Section for eta Production in Polarized pp Collisions at PHENIX

(PHENIX Collaboration) Measurements of double helicity asymmetries for inclusive hadron production in polarized proton-proton collisions are sensitive to spin-dependent parton distribution functions, in particular to the gluon distribution, Deltag. This study presents the double helicity asymmetry a...

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Bibliographic Details
Main Author: Ellinghaus, Frank
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:(PHENIX Collaboration) Measurements of double helicity asymmetries for inclusive hadron production in polarized proton-proton collisions are sensitive to spin-dependent parton distribution functions, in particular to the gluon distribution, Deltag. This study presents the double helicity asymmetry and the cross section for eta production (p-vector + 'p-vector ' '- > ' eta + X). The cross section measurement yields valuable data for the extraction of the fragmentation functions, which are unknown at present but are a prerequisite for the extraction of the spin-dependent parton distribution functions.
ISSN:0094-243X
DOI:10.1063/1.2750797