Single-Spin Asymmetries in W Boson Production at Next-to-Leading Order

  title={Single-Spin Asymmetries in W Boson Production at Next-to-Leading Order},
  author={Felix Maximilian Ringer and Werner Vogelsang},
  journal={Physical Review D},
We present an analytic next-to-leading order QCD calculation of the partonic cross sections for single-inclusive lepton production in hadronic collisions, when the lepton originates from the decay of an intermediate electroweak boson and is produced at high transverse momentum. In particular, we consider the case of incoming longitudinally polarized protons for which parity-violating single-spin asymmetries arise that are exploited in the $W$ boson program at RHIC to constrain the proton's… 

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