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

Abstract

We study parity-even and parity-odd polarization observables for the process $pp\to l^{\pm }X$, 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.

10 pages

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Cited by in corpus (20)

• TMD Evolution: Matching SIDIS to Drell-Yan and W/Z Boson Production
• Fragmentation contribution to the transverse single-spin asymmetry in proton-proton collisions
• Measurement of the transverse single-spin asymmetry in $p^{\uparrow }+p\to W^{\pm }/Z^0$ at RHIC
• Operator Constraints for Twist-3 Functions and Lorentz Invariance Properties of Twist-3 Observables
• Contribution of twist-3 fragmentation function to single transverse-spin asymmetry in semi-inclusive deep inelastic scattering
• Global fitting of single spin asymmetry: an attempt
• Probing the three-gluon correlation functions by the single spin asymmetry in p^\uparrow p\to DX
• Phenomenological constraints on $A_N$ in $p^{\uparrow }p\to \pi X$ from Lorentz invariance relations
• TMDs and SSAs in hadronic interactions
• Three-gluon contribution to the single spin asymmetry in Drell-Yan and direct-photon processes
• Longitudinal-transverse double-spin asymmetries in single-inclusive leptoproduction of hadrons
• Analysis of the double-spin asymmetry A_LT in inelastic nucleon-nucleon collisions
• Double spin asymmetry A_{LT} in direct photon production
• Double-spin asymmetry $A_{LT}$ in open charm production
• Transverse spin observables in hard-scattering hadronic processes within collinear factorization
• Spin asymmetries for vector boson production in polarized p+p collisions
• Twist-3 effect from the longitudinally polarized proton for $A_{LT}$ in hadron production from $pp$ collisions
• Twist-3 fragmentation effects for $A_{LT}$ in light hadron production from proton-proton collisions
• Double Sivers effect asymmetries and their impact on transversity measurements at RHIC
• Nucleon Tomography with 0-jettiness