Helicity Parton Distributions from Spin Asymmetries in W-Boson Production at RHIC

Abstract

We present a next-to-leading order QCD calculation of the cross section and longitudinal spin asymmetry in single-inclusive charged-lepton production, pp -> l X, at RHIC, where the lepton is produced in the decay of an electroweak gauge boson. Our calculation is presented in terms of a multi-purpose Monte-Carlo integration program that may be readily used to include experimental spin asymmetry data in a global analysis of helicity parton densities. We perform a toy global analysis, studying the impact of anticipated RHIC data on our knowledge about the polarized anti-quark distributions.

22 pages, 13 figures included. Typos in Figs 2, 6, 8 and scales corrected

References in corpus (13)

• Vector boson production at hadron colliders: a fully exclusive QCD calculation at NNLO
• Global analysis of fragmentation functions for pions and kaons and their uncertainties
• Extraction of Spin-Dependent Parton Densities and Their Uncertainties
• Global Analysis of Helicity Parton Densities and Their Uncertainties
• Global Analysis of Fragmentation Functions for Protons and Charged Hadrons
• Measurement of the W boson mass
• Transverse-momentum resummation: a perturbative study of Z production at the Tevatron
• The Polarised Valence Quark Distribution from semi-inclusive DIS
• Test the time-reversal modified universality of the Sivers function
• Threshold Resummation for W-Boson Production at RHIC
• Low-mass lepton pair production at large transverse momentum
• Longitudinal parity-violating asymmetry in hadronic decays of weak bosons in polarized proton collisions
• Longitudinal Single-Spin Asymmetries in Proton-Proton Scattering with a Hadronic Final State

Cited by in corpus (14)

• A first unbiased global determination of polarized PDFs and their uncertainties
• Measurement of longitudinal spin asymmetries for weak boson production in polarized proton-proton collisions at RHIC
• Cross Section and Parity Violating Spin Asymmetries of W^+/- Boson Production in Polarized p+p Collisions at sqrt(s)=500 GeV
• Flavor Structure of the Nucleon Sea
• Measurement of the parity-violating longitudinal single-spin asymmetry for $W^{\pm }$ boson production in polarized proton-proton collisions at $\sqrt{s}=500$GeV
• Measurements of $W$ and $Z/{\gamma }^{\ast }$ cross sections and their ratios in $p+p$ collisions at RHIC
• Transverse spin asymmetries for W-production in proton-proton collisions
• Single-Spin Asymmetries in W Boson Production at Next-to-Leading Order
• $W$-boson production in polarized proton-proton collisions at RHIC through next-to-next-to-leading order in perturbative QCD
• General positivity bounds for spin observables in particle inclusive production
• Effect of sea quarks on the single-spin asymmetries $A_L^{W^{\pm }}$ in polarized pp collisions at RHIC
• EW one-loop corrections to the longitudinally polarized Drell-Yan process. Charged-current case II
• Electroweak boson production at large transverse momentum in double polarized $pp$ scattering at next-to-leading order accuracy
• Proton Structure and PHENIX Experiment