Heavy quark correlations in hadronic collisions

TL;DR

This paper investigates heavy quark-antiquark correlations in proton collisions at various accelerators using the $k_t$-factorization approach, comparing different unintegrated parton distributions to understand their effects.

Contribution

It applies the $k_t$-factorization method to analyze heavy quark correlations across multiple collider energies, highlighting differences due to various UPDF models.

Findings

Correlations vary with collision energy and UPDF choice.

Azimuthal and transverse momentum correlations are characterized.

Results provide insights into parton dynamics in high-energy collisions.

Abstract

We discuss results of the $k_t$ - factorization approach for heavy quark-heavy antiquark correlations in proton-proton and proton-antiproton collisions for RHIC, Tevatron and LHC. We consider correlations in the azimuthal angle as well as in the two-dimensional space of transverse momentum of heavy quark and heavy antiquark. We compare results obtained with the help of different unintegrated parton distributions (UPDF) from the literature.