Top-quark decay at next-to-next-to-leading order in QCD.

  title={Top-quark decay at next-to-next-to-leading order in QCD.},
  author={Jun Gao and Chong-Sheng Li and Hua Xing Zhu},
  journal={Physical review letters},
  volume={110 4},
We present the complete calculation of the top-quark decay width at next-to-next-to-leading order in QCD, including next-to-leading electroweak corrections as well as finite bottom quark mass and W boson width effects. In particular, we also show the first results of the fully differential decay rates for the top-quark semileptonic decay t → W(+)(l(+)ν)b at next-to-next-to-leading order in QCD. Our method is based on the understanding of the invariant mass distribution of the final-state jet in… 

Figures and Tables from this paper

s -channel single top quark production and decay at next-to-next-to-leading-order in QCD

We report on a fully differential next-to-next-to-leading order (NNLO) calculation of s-channel single top (anti-)quark production with a semi-leptonic decay at the LHC, neglecting the color

Charm-Quark Production in Deep-Inelastic Neutrino Scattering at Next-to-Next-to-Leading Order in QCD.

The results can be used to improve the extraction of the parton distribution function of a strange quark in the nucleon and compare with data on dimuon production in (anti)neutrino scattering from a heavy nucleus.

Top-quark pair production at next-to-next-to-leading order QCD in electron positron collisions

A bstractWe set up a formalism, within the antenna subtraction framework, for computing the production of a massive quark-antiquark pair in electron positron collisions at next-to-next-to-leading

Three-Loop Quark Jet Function.

This work calculates the massless quark jet function to three-loop order, which represents the first complete three- loop result for a factorization ingredient describing collinear radiation.

Differential distributions for t-channel single top-quark production and decay at next-to-next-to-leading order in QCD

A bstractWe present a detailed phenomenological study of the next-to-next-to-leading order (NNLO) QCD corrections for t-channel single top (anti-)quark production and its semi-leptonic decay at the

Top-quark mass determination from t-channel single top production at the LHC

We study determination of top-quark mass using leptonic observables in t-channel single top-quark production at the LHC. We demonstrate sensitivity of transverse momentum of the charged lepton on the

Higher Order Corrections to Spin Correlations in Top Quark Pair Production at the LHC.

The NNLO corrections to spin correlations in top quark pair production at the LHC play an important role in the description of the corresponding differential distributions and it is observed that the standard model calculation describes the available data in the fiducial region but does not agree with the measurement extrapolated to full phase space.

Top quark pair production at small transverse momentum in hadronic collisions

We investigate the transverse momentum resummation for top quark pair production at hadron colliders using the soft-collinear effective theory and the heavy-quark effective theory. We derive the

The gluon-fusion production of Higgs boson pair: N3LO QCD corrections and top-quark mass effects

Abstract The Higgs boson pair production via gluon fusion at high-energy hadron colliders, such as the LHC, is vital in deciphering the Higgs potential and in pinning down the electroweak symmetry

Higgs boson decay into b-quarks at NNLO accuracy

A bstractWe compute the fully differential decay rate of the Standard Model Higgs boson into b-quarks at next-to-next-to-leading order (NNLO) accuracy in αs. We employ a general subtraction scheme