Hadronic Dijet Imbalance and Transverse-Momentum Dependent Parton Distributions

Abstract

We compare several recent theoretical studies of the single transverse spin asymmetry in dijet-correlations at hadron colliders. We show that the results of these studies are all consistent. To establish this, we investigate in particular the two-gluon exchange contributions to the relevant initial and final state interactions in the context of a simplifying model. Overall, the results confirm that the dijet imbalance obeys at best a non-standard or "generalized" transverse-momentum-dependent factorization.

arXiv comment13 pages, 3 figures

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• QCD transverse-momentum resummation in gluon fusion processes
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• Forward di-jet production in p+Pb collisions in the small-x improved TMD factorization framework
• Transverse-momentum resummation for heavy-quark hadroproduction
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• Lepton-jet Correlations in Deep Inelastic Scattering at the Electron-Ion Collider
• Angular dependences in inclusive two-hadron production at BELLE
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• Forward Z-boson production and the unintegrated sea quark density
• Soft Gluon Resummations in Dijet Azimuthal Angular Correlations at the Collider
• Collins azimuthal asymmetries of hadron production inside jets
• Heavy Quarkonium Production in Single Transverse Polarized High Energy Scattering
• Process dependent Sivers function and implications for single spin asymmetry in inclusive hadron production
• Transverse Momentum Resummation for Dijet Correlation in Hadronic Collisions
• Angular correlations in multi-jet final states from kt-dependent parton showers
• Dijet imbalance in hadronic collisions
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• Drell-Yan process with jet vetoes: breaking of generalized factorization
• Lepton-jet Correlation in Deep Inelastic Scattering
• Extra Spin Asymmetries From the Breakdown of TMD-Factorization in Hadron-Hadron Collisions
• Testing the process dependence of the Sivers function via hadron distributions inside a jet
• Transverse Momentum Dependent Parton Distribution/Fragmentation Functions at an Electron-Ion Collider
• Non-Universality of Transverse Momentum Dependent Parton Distributions at Small-x
• Low Transverse Momentum Heavy Quark Pair Production to Probe Gluon Tomography
• Recent results on unintegrated parton distributions
• Comparison of improved TMD and CGC frameworks in forward quark dijet production
• Collins Asymmetry at Hadron Colliders
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• Single spin asymmetries in inclusive hadron production from SIDIS to hadronic collisions: universality and phenomenology
• The Sivers Asymmetry in Hadronic Dijet Production
• Initial and Final State Interaction Effects in Small-x Quark Distributions
• Quark-gluon correlation functions relevant to single transverse spin asymmetries
• Azimuthal asymmetries in lepton-pair production at a fixed-target experiment using the LHC beams (AFTER)
• Back-to-back azimuthal correlations in Z+jet events at high transverse momentum in the TMD parton branching method at next-to-leading order
• T-odd effects in photon-jet production at the Tevatron
• Azimuthal correlations of high transverse momentum jets at next-to-leading order in the parton branching method
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• Azimuthal asymmetries in single polarized proton-proton Drell-Yan processes
• Restoration of $k_T$ factorization for low $p_T$ hadron hadroproduction
• Azimuthal angle dependence of di-jet production in unpolarized hadron scattering
• Factorization and its Breaking in Dijet Single Transverse Spin Asymmetries in $pp$ Collisions
• Dijet azimuthal distributions and initial-state parton showers
• A Proposal for the Muon Piston Calorimeter Extension (MPC-EX) to the PHENIX Experiment at RHIC