174 citations · 534 across the 6 of their papers we have counts for
35 papers · 1 filter
Determination of the strong coupling constant using matched NNLO+NLLA predictions for hadronic event shapes in e+e- annihilations
G. Dissertori, A. Gehrmann-De Ridder, T. Gehrmann +4
We present a determination of the strong coupling constant from a fit of QCD predictions for six event-shape variables, calculated at next-to-next-to-leading order (NNLO) and match…
Two-Loop Planar Corrections to Heavy-Quark Pair Production in the Quark-Antiquark Channel
R. Bonciani, A. Ferroglia, T. Gehrmann +1
We evaluate the planar two-loop QCD diagrams contributing to the leading color coefficient of the heavy-quark pair production cross section, in the quark-antiquark annihilation cha…
Electroweak corrections to three-jet production in electron-positron annihilation
Ansgar Denner, Stefan Dittmaier, Thomas Gehrmann +1
We compute the electroweak corrections to three-jet production and related event-shape observables at electron-positron colliders. We properly account for the ex…
Two-Loop QCD Helicity Amplitudes for (2+1)-Jet Production in Deep Inelastic Scattering
T. Gehrmann, E. W. N. Glover
We derive the two-loop QCD helicity amplitudes for the processes () and , which are the partonic reactions yielding $(2+1…
NNLO moments of event shapes in e+e- annihilation
A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +1
We compute the next-to-next-to-leading order (NNLO) QCD corrections to the first five moments of six event shape variables related to three-particle final states in electron-positr…
Muon Excess in Cosmic Rays and at CDF: Signs for a Hidden Sector?
Thomas Gehrmann, Nicolas Greiner, Pedro Schwaller
In this letter we discuss a certain class of Hidden Valley models where the dynamics in the hidden sector are close to a strongly coupled conformal fixed point. We show that these…