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Article
Cross section and transverse single-spin asymmetry of eta mesons in p up arrow plus p collisions at root s=200 GeV at forward rapidity
Physical Review D
Document Type
Article
Disciplines
Publication Version
Published Version
Publication Date
10-20-2014
DOI
10.1103/PhysRevD.90.072008
Abstract
We present a measurement of the cross section and transverse single-spin asymmetry (AN) for. mesons at large pseudorapidity from root s = 200 GeV p up arrow + p collisions. The measured cross section for 0.5 < p(T) < 5.0 GeV/c and 3.0 < vertical bar eta vertical bar < 3.8 is well described by a next-to-leading-order perturbative-quantum-chromodynamics calculation. The asymmetries A(N) have been measured as a function of Feynman-x (x(F)) from 0.2 < vertical bar x(F)vertical bar < 0.7, as well as transverse momentum (p(T)) from 1.0 < p(T) < 4.5 GeV/c. The asymmetry averaged over positive x(F) is < A(N)> = 0.061 +/- 0.014. The results are consistent with prior transverse single-spin measurements of forward eta and pi(0) mesons at various energies in overlapping x(F) ranges. Comparison of different particle species can help to determine the origin of the large observed asymmetries in p up arrow + p collisions.
Copyright Owner
American Physical Society
Copyright Date
2014
Language
en
File Format
application/pdf
Citation Information
Andrew Adare, Nicole Apadula, Sarah C. Campbell, Lei Ding, et al.. "Cross section and transverse single-spin asymmetry of eta mesons in p up arrow plus p collisions at root s=200 GeV at forward rapidity" Physical Review D Vol. 90 Iss. 7 (2014) p. 072008 Available at: http://works.bepress.com/craig-ogilvie/56/
This is an article from Physical Review D 90 (2014): 072008, doi:10.1103/PhysRevD.90.072008. Posted with permission.