156 citations · 679 across the 13 of their papers we have counts for
13 papers
NNLO non-resonant corrections to threshold top-pair production from e+ e- collisions: Endpoint-singular terms
Bernd Jantzen, Pedro Ruiz-Femenía
We analyse the subleading non-resonant contributions to the e+ e- -> W+ W- b bbar cross section at energies near the top-antitop threshold. These correspond to next-to-next-to-lead…
New proofs for the two Barnes lemmas and an additional lemma
Bernd Jantzen
Mellin-Barnes (MB) representations have become a widely used tool for the evaluation of Feynman loop integrals appearing in perturbative calculations of quantum field theory. Some…
Expansion by regions: revealing potential and Glauber regions automatically
Bernd Jantzen, Alexander V. Smirnov, Vladimir A. Smirnov
When performing asymptotic expansions using the strategy of expansion by regions, it is a non-trivial task to find the relevant regions. The recently published Mathematica code asy…
Foundation and generalization of the expansion by regions
Bernd Jantzen
The "expansion by regions" is a method of asymptotic expansion developed by Beneke and Smirnov in 1997. It expands the integrand according to the scaling prescriptions of a set of…
Electroweak non-resonant NLO corrections to e+ e- -> W+ W- b bbar in the t tbar resonance region
M. Beneke, B. Jantzen, P. Ruiz-Femenia
We analyse subleading electroweak effects in the top anti-top resonance production region in e+ e- collisions which arise due to the decay of the top and anti-top quarks into the W…
Two-loop electroweak next-to-leading logarithms for processes involving heavy quarks
Ansgar Denner, Bernd Jantzen, Stefano Pozzorini
We derive logarithmically enhanced two-loop virtual electroweak corrections for arbitrary fermion-scattering processes at the TeV scale. This extends results previously obtained fo…