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ID 45823
file
creator
PHENIX Collaboration
Hachiya, T.
Harada, H.
Haruna, K.
Kijima, K. M.
Nakamiya, Y.
Nakamura, T.
Ouchida, M.
Sakata, H.
NDC
Physics
abstract
Measurements of double-helicity asymmetries in inclusive hadron production in polarized p + p collisions are sensitive to helicity-dependent parton distribution functions, in particular, to the gluon helicity distribution, Δg. This study focuses on the extraction of the double-helicity asymmetry in η production (p^^→ + p^^→ → η + X), the η cross section, and the η/π0 cross section ratio. The cross section and ratio measurements provide essential input for the extraction of fragmentation functions that are needed to access the helicity-dependent parton distribution functions.
journal title
Physical Review D
volume
Volume 83
issue
Issue 3
start page
032001-1
end page
032001-11
date of issued
2011-02-01
publisher
American Physical Society
issn
0556-2821
2470-0010
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2011 American Physical Society
department
Graduate School of Science