177 citations · 458 across the 6 of their papers we have counts for
6 papers
Heavy-Quark Form Factors and Threshold Cross Section at O(α_S^2)
W. Bernreuther, R. Bonciani, T. Gehrmann +4
During the last year, analytic expressions for the two-loop QCD corrections to the form factors for the vector, axial-vector, scalar and pseudo-scalar vertices involving a pair of…
QCD Corrections to Static Heavy Quark Form Factors
W. Bernreuther, R. Bonciani, T. Gehrmann +4
Interactions of heavy quarks, in particular of top quarks, with electroweak gauge bosons are expected to be very sensitive to new physics effects related to electroweak symmetry br…
Decays of Scalar and Pseudoscalar Higgs Bosons into Fermions: Two-loop QCD Corrections to the Higgs-Quark-Antiquark Amplitude
W. Bernreuther, R. Bonciani, T. Gehrmann +3
As a first step in the aim of arriving at a differential description of neutral Higgs boson decays into heavy quarks, , to second order in the QCD coupling …
Two-Loop QCD Corrections to the Heavy Quark Form Factors: Anomaly Contributions
W. Bernreuther, R. Bonciani, T. Gehrmann +3
We present closed analytic expressions for the order triangle diagram contributions to the matrix elements of the singlet and non-singlet axial vector currents between the…
Two-Loop QCD Corrections to the Heavy Quark Form Factors: Axial Vector Contributions
W. Bernreuther, R. Bonciani, T. Gehrmann +4
We consider the Z Q Qbar vertex to second order in the QCD coupling for an on-shell massive quark-antiquark pair and for arbitrary momentum transfer of the Z boson. We present clos…
Two-loop QCD Corrections to the Heavy Quark Form Factors: the Vector Contributions
W. Bernreuther, R. Bonciani, T. Gehrmann +4
We present closed analytic expressions of the electromagnetic vertex form factors for heavy quarks at the two-loop level in QCD for arbitrary momentum transfer. The calculation is…