Dortmund 2021 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 1: QCD and electroweak interactions (theory)

T 1.7: Vortrag

Montag, 15. März 2021, 17:30–17:45, Ta

Heavy-quark hadro-production at next-to-leading-order in QCD and beyond. — •Yewon Yang and Sven-Olaf Moch — Universität Hamburg, Hamburg, Germany

Heavy-quark hadro-production is accessible to quantum chromodynamics (QCD) perturbation theory for heavy quark mass scales which are larger than the QCD scale. The talk reports on phenomenological results for heavy-quark pair production beyond next-to-leading-order (NLO) for the hard scattering in combination with modern parton distribution functions (PDFs).

Transverse momentum and rapidity distributions beyond NLO are obtained using single-particle inclusive kinematics where the threshold logarithms are resummed to derive approximate fixed-order perturbative corrections at next-to-next-to-leading-order (NNLO). For the total inclusive cross section, complete predictions at NNLO are used, which include also the contributions from the high energy limit. These complete predictions at NNLO for total cross section are compared with four different modern PDF sets in proton-proton collisions at 7, 8 and 13 TeV hadronic center-of-mass energy for the Large Hadron Collider.