NNLL top-antitop production at threshold

Autor(en)

Maximilian Stahlhofen, André H. Hoang

Abstrakt

We present an update to the NNLL RG-improved QCD prediction of top-antitop production in electron-positron annihilation at threshold. It includes for the first time a complete NNLL resummation of ultrasoft logarithms, which are dominant at this order and give a sizable correction. The renormalization scale dependence of the total resonance cross section decreases substantially compared to earlier predictions, where the ultrasoft logarithms were included only partially.

Organisation(en)

Teilchenphysik

Journal

Proceedings of Science (PoS)

Band

2011

Anzahl der Seiten

8

Publikationsdatum

2011

ÖFOS 2012

103034 Teilchenphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/nnll-topantitop-production-at-threshold(e2e45fcd-5008-4328-848a-411b461dda49).html