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arXiv · 1006.3097

Transverse spin asymmetries for W-production in proton-proton collisions

A. Metz·J. Zhou
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Abstract

We study parity-even and parity-odd polarization observables for the process $p \, p \to l^{\pm} \, X$, where the lepton comes from the decay of a $W$-boson. By using the collinear twist-3 factorization approach, we consider the case when one proton is transversely polarized, while the other is either unpolarized or longitudinally polarized. These observables give access to two particular quark-gluon-quark correlation functions, which have a direct relation to transverse momentum dependent parton distributions. We present numerical estimates for RHIC kinematics. Measuring, for instance, the parity-even transverse single spin correlation would provide a crucial test of our current understanding of single spin asymmetries in the framework of QCD.

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A. Metz, J. Zhou. 2010-06-15. Transverse spin asymmetries for W-production in proton-proton collisions. https://doi.org/10.1016/j.physletb.2011.04.042

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