Abstract
We present a measurement of the cross section and transverse single-spin asymmetry () for mesons at large pseudorapidity from collisions. The measured cross section for and is well described by a next-to-leading-order perturbative-quantum-chromodynamics calculation. The asymmetries have been measured as a function of Feynman- () from , as well as transverse momentum () from . The asymmetry averaged over positive is . The results are consistent with prior transverse single-spin measurements of forward and mesons at various energies in overlapping ranges. Comparison of different particle species can help to determine the origin of the large observed asymmetries in collisions.
4 More- Received 19 June 2014
DOI:https://doi.org/10.1103/PhysRevD.90.072008
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