24 citations · 67 across the 11 of their papers we have counts for
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Analytic Methods for Perturbative Quantum Chromodynamics
Fabian Wunder
Nature, at the shortest distances accessible to contemporary colliders, is described by the Standard Model of particle physics with remarkable precision. Since the discovery of the…
On multi-propagator angular integrals
Juliane Haug, Vladimir A. Smirnov, Fabian Wunder
We study multi-propagator angular integrals, a class of phase-space integrals relevant to processes with multiple observed final states and a test-bed for transferring loop-integra…
Single-valued representation of unpolarized and polarized semi-inclusive deep inelastic scattering at next-to-next-to-leading order
Juliane Haug, Fabian Wunder
We revisit the recently published analytic results for unpolarized and polarized semi-inclusive deep inelastic scattering (SIDIS) at next-to-next-to-leading order (NNLO) in QCD. Th…
Angular integrals with three denominators via IBP, mass reduction, dimensional shift, and differential equations
Juliane Haug, Fabian Wunder
Angular integrals arise in a wide range of perturbative quantum field theory calculations. In this work we investigate angular integrals with three denominators in $d=4-2\varepsilo…
Expansion by regions meets angular integrals
Vladimir A. Smirnov, Fabian Wunder
We study the small-mass asymptotic behavior of so-called angular integrals, appearing in phase-space calculations in perturbative quantum field theory. For this purpose we utilize…
A semi-analytical -space solution for parton evolution -- Application to non-singlet and singlet DGLAP equation
Juliane Haug, Oliver Schüle, Fabian Wunder
We present a novel semi-analytical method for parton evolution. It is based on constructing a family of analytic functions spanning -space which is closed under the considered e…
Asymptotic behavior of angular integrals in the massless limit
Fabian Wunder
We investigate the small-mass asymptotics of a class of massive dimensional angular integrals. These integrals arise in a wide range of perturbative quantum field theory calcul…
Perturbative -odd asymmetries in the Drell-Yan process revisited
Valery E. Lyubovitskij, Werner Vogelsang, Fabian Wunder +1
We calculate the perturbative -odd contributions to the lepton angular distribution in the Drell-Yan process. Using collinear factorization, we work at the first order in QCD pe…
The massless non-adjacent double off-shell scalar box integral -- branch cut structure and all-order epsilon expansion
Juliane Haug, Fabian Wunder
We generalize the result of our recent paper on the massless single off-shell scalar box integral to the case of two non-adjacent end points off the light cone. An analytic result…
The massless single off-shell scalar box integral -- branch cut structure and all-order epsilon expansion
Juliane Haug, Fabian Wunder
We investigate the single off-shell scalar box integral with massless internal lines in dimensional regularization. A special emphasis is given to higher orders in the dimensional…
New ideas for handling of loop and angular integrals in D-dimensions in QCD
Valery E. Lyubovitskij, Fabian Wunder, Alexey S. Zhevlakov
We discuss new ideas for consideration of loop diagrams and angular integrals in -dimensions in QCD. In case of loop diagrams, we propose the covariant formalism of expansion of…