Top-Bottom Interference Contribution to Fully Inclusive Higgs Production.

We evaluate the top-bottom interference contribution to the fully inclusive Higgs production cross section at next-to-next-to-leading order in QCD. Although bottom-quark-mass effects are power suppressed, the accuracy of state-of-the-art theory predictions makes an exact determination of this effect indispensable. The total effect of the interference at 13 TeV is -1.

Erratum: Next-to-Next-to-Leading Order Study of Three-Jet Production at the LHC [Phys. Rev. Lett. 127, 152001 (2021)].

This corrects the article DOI: 10.1103/PhysRevLett.127.

Next-to-Next-to-Leading Order Study of Three-Jet Production at the LHC.

Multijet rates at hadron colliders provide a unique possibility for probing quantum chromodynamics (QCD), the theory of strong interactions. By comparing theory predictions with collider data, one can directly test perturbative QCD, extract fundamental parameters like the strong coupling α_{s}, and search for physics beyond the standard model. In this work we calculate, for the first time, the next-to-next-to-leading order (NNLO) QCD corrections to typical three-jet observables and to differential three-to-two jet ratios.

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

We calculate, for the first time, the next-to-next-to-leading order (NNLO) QCD corrections to spin correlations in top quark pair production at the LHC. The NNLO corrections play an important role in the description of the corresponding differential distributions. We observe that the standard model calculation describes the available Δϕ_{ℓℓ} data in the fiducial region but does not agree with the Δϕ_{ℓℓ} measurement extrapolated to full phase space.