N^3LO approximate results for top-quark differential cross sections and forward-backward asymmetry

29 Apr 2015, 09:20
20m
PROMENADE ()

PROMENADE

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Speaker

Nikolaos Kidonakis (Kennesaw State University)

Description

I present a calculation of approximate N$^3$LO corrections from NNLL soft-gluon resummation for differential distributions in top-antitop pair production in hadronic collisions. I show that soft-gluon corrections are the dominant contribution to top-quark production and closely approximate exact results through NNLO. I show aN$^3$LO results for the total $t{\bar t}$ cross section, the top-quark $p_T$ and rapidity distributions, and the top-quark forward-backward asymmetry. The higher-order corrections are significant and they reduce theoretical uncertainties.

Primary author

Nikolaos Kidonakis (Kennesaw State University)

Presentation Materials