31st International Workshop on Deep Inelastic Scattering

Linear power corrections to top quark production processes

10 avr. 2024, 11:40

20m

Maison MINATEC, Grenoble, FRANCE

Regular parallel talk WG4: QCD with Heavy Flavors and Hadronic Final States WG4

Orateur

Melih OZCELIK (IJCLab)

Description

We discuss the linear power corrections in ${\mathrm{\Lambda }}_{\text{QCD}}$ to top quark production processes in hadron collisions using renormalon calculus. We show how such non-perturbative corrections can be obtained using the Low-Burnett-Kroll theorem, which provides the first subleading term to the expansion of the real-emission amplitudes around the soft limit. We demonstrate that there are no linear power corrections to the total cross sections provided that these cross sections are expressed in terms of a short-distance top quark mass. We also derive a universal formula for the linear power corrections to generic observables that involve the top-quark momentum.

Documents de présentation

DIS2024_OZCELIK.pdf