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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
  • Andrew Adare, University of Colorado, Boulder
  • Nicole Apadula, Iowa State University
  • Sarah C. Campbell, Iowa State University
  • Lei Ding, Iowa State University
  • Alan Dion, Iowa State University
  • John C. Hill, Iowa State University
  • Todd Kempel, Iowa State University
  • John G. Lajoie, Iowa State University
  • Alexandre Lebedev, Iowa State University
  • Craig Ogilvie, Iowa State University
  • Milap R. Patel, Iowa State University
  • H. Pei, Iowa State University
  • Joshua Perry, Iowa State University
  • Marzia Rosati, Iowa State University
  • M. Shimomura, Iowa State University
  • C. L. Silva, Iowa State University
  • Arbin Timilsina, Iowa State University
  • Fang Wei, Iowa State University
  • Shawn Whitaker, Iowa State University
  • et al.
  • PHENIX Collaboration, PHENIX Collaboration
Document Type
Article
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.
Comments

This is an article from Physical Review D 90 (2014): 072008, doi:10.1103/PhysRevD.90.072008. Posted with permission.

Copyright Owner
American Physical Society
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/