Sep 6 – 9, 2016
ICAS-UNSAM, Buenos Aires, Argentina
Europe/Zurich timezone

Transverse-momentum resummation for heavy-quark production at hadron colliders

Sep 8, 2016, 2:45 PM
30m
ICAS-UNSAM, Buenos Aires, Argentina

ICAS-UNSAM, Buenos Aires, Argentina

Buenos Aires, Argentina

Speaker

Hayk Sargsyan (University of Zurich)

Description

I discuss the all-order transverse momentum resummation structure for the hadroproduction of heavy-quark pairs. I present some numerical results for the resummed qT spectrum of heavy-quark pairs at next-to-leading logarithmic (NLL) order. I also discuss the azimuthal correlations produced by soft parton radiation, which are entangled with those that are produced by initial-state collinear radiation. The knowledge of the small-qT limit of the transverse-momentum cross section enables us to perform a fully exclusive fixed-order calculation up to NNLO in the framework of qT-subtraction method. I present the results of our first calculation which is accurate up to NLO in QCD perturbation theory and it includes all the flavour off-diagonal partonic channels at NNLO.

Summary

I discuss the all-order transverse momentum resummation structure for the hadroproduction of heavy-quark pairs. I present some numerical results for the resummed qT spectrum of heavy-quark pairs at next-to-leading logarithmic (NLL) order. I also discuss the azimuthal correlations produced by soft parton radiation, which are entangled with those that are produced by initial-state collinear radiation. The knowledge of the small-qT limit of the transverse-momentum cross section enables us to perform a fully exclusive fixed-order calculation up to NNLO in the framework of qT-subtraction method. I present the results of our first calculation which is accurate up to NLO in QCD perturbation theory and it includes all the flavour off-diagonal partonic channels at NNLO.

Primary author

Hayk Sargsyan (University of Zurich)

Presentation materials

There are no materials yet.