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11 papers found.
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Dynamical scales for multi-TeV top-pair production at the LHC

We calculate all major differential distributions with stable top-quarks at the LHC. The calculation covers the multi-TeV range that will be explored during LHC Run II and beyond. Our results are in the form of high-quality binned distributions. We offer predictions based on three different parton distribution function (pdf) sets. In the near future we will make our results...

Top-pair production at the LHC through NNLO QCD and NLO EW

Abstract In this work we present for the first time predictions for top-quark pair differential distributions at the LHC at NNLO QCD accuracy and including EW corrections. For the latter we include not only contributions of \( \mathcal{O}\left({\alpha}_s^2\alpha \right) \), but also those of order \( \mathcal{O}\left({\alpha}_s{\alpha}^2\right) \) and \( \mathcal{O}\left({\alpha...

Pinning down the large-x gluon with NNLO top-quark pair differential distributions

Abstract Top-quark pair production at the LHC is directly sensitive to the gluon PDF at large x. While total cross-section data is already included in several PDF determinations, differential distributions are not, because the corresponding NNLO calculations have become available only recently. In this work we study the impact on the large-x gluon of top-quark pair differential...

NNLO QCD predictions for fully-differential top-quark pair production at the Tevatron

We present a comprehensive study of differential distributions for Tevatron top-pair events at the level of stable top quarks. All calculations are performed in NNLO QCD with the help of a fully differential partonic Monte-Carlo and are exact at this order in perturbation theory. We present predictions for all kinematic distributions for which data exists. Particular attention is...

Determination of the top quark mass from leptonic observables

Stefano Frixione 1 Alexander Mitov 0 0 Cavendish Laboratory, University of Cambridge , Cambridge CB3 0HE, U.K 1 PH Department, TH Unit , CERN, CH-1211 Geneva 23, Switzerland We present a procedure

Determination of the top quark mass circa 2013: methods, subtleties, perspectives

We present an up-to-date overview of the problem of top quark mass determination. We assess the need for precision in the top mass extraction in the LHC era together with the main theoretical and experimental issues arising in precision top mass determination. We collect and document existing results on top mass determination at hadron colliders and map the prospects for future...

Recent theoretical progress in top quark pair production at hadron colliders

This is a writeup of a plenary talk given at the conference HCP 2012 held November 2012 in Kyoto, Japan. This writeup reviews recent theoretical developments in the following areas of top quark physics at hadron colliders: (a) the forward-backward asymmetry anomaly at the Tevatron, (b) precision top mass determination, (c) state of the art NLO calculations and (d) progress in...

NNLO corrections to top pair production at hadron colliders: the quark-gluon reaction

Michal Czakon 1 Alexander Mitov 0 0 Theory Division , CERN, CH-1211 Geneva 23, Switzerland 1 Institut fur Theoretische Teilchenphysik und Kosmologie, RWTH Aachen University , D-52056 Aachen

NNLO corrections to top-pair production at hadron colliders: the all-fermionic scattering channels

Michal Czakon 1 Alexander Mitov 0 Open Access 0 Theory Division , CERN, CH-1211 Geneva 23, Switzerland 1 Institut fur Theoretische Teilchenphysik und Kosmologie, RWTH Aachen University , D-52056

Constraints on the gluon PDF from top quark pair production at hadron colliders

AbstractUsing the recently derived NNLO cross sections [1], we provide NNLO+NNLL theoretical predictions for top quark pair production based on all the available NNLO PDF sets, and compare them with the most precise LHC and Tevatron data. In this comparison we study in detail the PDF uncertainty and the scale, m t and α s dependence of the theoretical predictions for each PDF set...