Hadronic Dijet Imbalance and Transverse-Momentum Dependent Parton Distributions

TL;DR

This paper compares recent theoretical studies on the single transverse spin asymmetry in dijet correlations at hadron colliders, confirming the consistency of results and highlighting the generalized TMD factorization in dijet imbalance.

Contribution

It demonstrates the consistency of various recent theoretical approaches and clarifies the role of generalized TMD factorization in dijet imbalance phenomena.

Findings

All recent studies are consistent in their results.

Dijet imbalance follows a generalized TMD factorization.

Two-gluon exchange contributions are crucial in the analysis.

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.