The Sivers single-spin asymmetry in photon-jet production

Abstract

We study a weighted asymmetry in the azimuthal distribution of photon-jet pairs produced in the process p^\uparrow p --> γjet X with a transversely polarized proton. We focus on the contribution of the Sivers effect only, considering experimental configurations accessible at RHIC-BNL. We show that predictions for the asymmetry, obtained in terms of gluonic-pole cross sections calculable in perturbative QCD, can be tested and clearly discriminated from those based on a generalized parton model, involving standard partonic cross sections. Experimental measurements of the asymmetry will therefore test our present understanding of single-spin asymmetries.

Some changes in the text and in the layout. Two references added. Accepted for publication in PRL

References in corpus (3)

• Single transverse-spin asymmetry in high transverse momentum pion production in pp collisions
• The Construction of Gauge-Links in Arbitrary Hard Processes
• Single-Transverse Spin Asymmetry in Dijet Correlations at Hadron Colliders

Cited by in corpus (19)

• Gluon and Wilson loop TMDs for hadrons of spin $\le$ 1
• Azimuthal and Single Spin Asymmetries in Hard Scattering Processes
• An Observation Concerning the Process Dependence of the Sivers Functions
• Evolution of twist-3 multi-parton correlation functions relevant to single transverse-spin asymmetry
• Process dependent Sivers function and implications for single spin asymmetry in inclusive hadron production
• Inclusive production of a heavy-light dijet system in hybrid high-energy and collinear factorization
• Gluon TMDs in quarkonium production
• Single spin asymmetries in inclusive hadron production from SIDIS to hadronic collisions: universality and phenomenology
• Transverse spin asymmetries for W-production in proton-proton collisions
• T-odd effects in photon-jet production at the Tevatron
• Color entanglement for $\gamma$-jet production in polarized pA collisions
• Gauge links, TMD-factorization, and TMD-factorization breaking
• Non-collinearity in high energy processes
• Azimuthal angle dependence of di-jet production in unpolarized hadron scattering
• Production of true para-muonium in linearly polarized photon fusions
• A theoretical study of spin filtering and its application to polarizing antiprotons
• Accessing tri-gluon correlations in the nucleon via the single spin asymmetry in open charm production
• Soft background fields at next-to-leading power in transverse momentum dependent SIDIS with jets
• The Role of Gauge Invariance in Single-Spin Asymmetries