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.

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

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Cited by in corpus (37)

• No Generalized TMD-Factorization in the Hadro-Production of High Transverse Momentum Hadrons
• Gluon and Wilson loop TMDs for hadrons of spin $\le$ 1
• Azimuthal and Single Spin Asymmetries in Hard Scattering Processes
• Physics Opportunities of a Fixed-Target Experiment using the LHC Beams
• An Observation Concerning the Process Dependence of the Sivers Functions
• Evolution of twist-3 multi-parton correlation functions relevant to single transverse-spin asymmetry
• Probing Gluonic Spin-Orbit Correlations in Photon Pair Production
• Process dependent Sivers function and implications for single spin asymmetry in inclusive hadron production
• General Helicity Formalism for Polarized Semi-Inclusive Deep Inelastic Scattering
• On the role of Collins effect in the single spin asymmetry A_N in p(transv. polarized) p --> h X processes
• Dijet imbalance in hadronic collisions
• Inclusive production of a heavy-light dijet system in hybrid high-energy and collinear factorization
• Exploring the structure of the proton through polarization observables in l p \to jet X
• Testing the process dependence of the Sivers function via hadron distributions inside a jet
• TMDs and SSAs in hadronic interactions
• Gluon TMDs in quarkonium production
• Single spin asymmetries in l p --> h X processes: a test of factorization
• Sivers Asymmetry in Photoproduction of $J/\psi$ and Jet at the EIC
• Transverse spin asymmetries for W-production in proton-proton collisions
• Single spin asymmetries in inclusive hadron production from SIDIS to hadronic collisions: universality and phenomenology
• Transverse Single Spin Asymmetry in $p+p^{\uparrow }\to J/\psi +X$
• Quark-gluon correlation functions relevant to single transverse spin asymmetries
• T-odd effects in photon-jet production at the Tevatron
• Color entanglement for $\gamma$-jet production in polarized pA collisions
• Collins and Sivers effects in p(transv. polarized) p --> jet pion X: Universality and process dependence
• Spin physics at A Fixed-Target ExpeRiment at the LHC (AFTER@LHC)
• Gauge links, TMD-factorization, and TMD-factorization breaking
• Non-collinearity in high energy processes
• Wigner distributions and GTMDs in a proton using light-front quark-diquark model
• Azimuthal angle dependence of di-jet production in unpolarized hadron scattering
• Gluon TMD studies at EIC
• Production of true para-muonium in linearly polarized photon fusions
• A Proposal for the Muon Piston Calorimeter Extension (MPC-EX) to the PHENIX Experiment at RHIC
• The Role of Gauge Invariance in Single-Spin Asymmetries
• 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
• A theoretical study of spin filtering and its application to polarizing antiprotons