Article
Cross section and double helicity asymmetry for eta mesons and their comparison to pi(0) production in p plus p collisions at root s=200 GeV
Physical Review D
Document Type
Article
Disciplines
Publication Version
Published Version
Publication Date
2-1-2011
DOI
10.1103/PhysRevD.83.032001
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, Delta g. This study focuses on the extraction of the double-helicity asymmetry in eta production ((p) over right arrow + (p) over right arrow -> eta + X), the eta cross section, and the eta/pi(0) 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.
Copyright Owner
American Physical Society
Copyright Date
2011
Language
en
File Format
application/pdf
Citation Information
Andrew Adare, Nathan C. Grau, John C. Hill, Todd Kempel, et al.. "Cross section and double helicity asymmetry for eta mesons and their comparison to pi(0) production in p plus p collisions at root s=200 GeV" Physical Review D Vol. 83 Iss. 3 (2011) p. 032001 Available at: http://works.bepress.com/craig-ogilvie/244/
This article is published as Adare, A., S. Afanasiev, C. Aidala, N. N. Ajitanand, Yasuyuki Akiba, H. Al-Bataineh, J. Alexander et al. "Cross section and double helicity asymmetry for η mesons and their comparison to π 0 production in p+ p collisions at s= 200 GeV." Physical Review D 83, no. 3 (2011): 032001. DOI:10.1103/PhysRevD.83.032001. Posted with permission.