publication . Article . Other literature type . 2015

The Top Quark Forward-backward Asymmetry at Approximate N3LO

Kidonakis, Nikolaos;
Open Access
  • Published: 07 Apr 2015 Journal: Physical Review D, volume 91 (issn: 1550-7998, eissn: 1550-2368, Copyright policy)
  • Publisher: American Physical Society (APS)
Abstract
I calculate the top quark forward-backward asymmetry at the Tevatron in both the laboratory frame and the $t{\bar t}$ rest frame. I show that soft-gluon corrections are the dominant contribution to the asymmetry and closely approximate exact results through next-to-next-to-leading order (NNLO). I present a calculation of the asymmetry including approximate next-to-next-to-next-to-leading-order (N$^3$LO) soft-gluon contributions from next-to-next-to-leading-logarithm (NNLL) resummation as well as electroweak corrections. Thus approximate N$^3$LO (aN$^3$LO) results are obtained, which significantly enhance and improve previous NNLO results. The theoretical aN$^3$L...
Subjects
arXiv: High Energy Physics::PhenomenologyHigh Energy Physics::Experiment
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