activity
19962023
most citedAsymptotic expansion of Feynman integrals near threshold

987 citations · 8.8k across the 109 of their papers we have counts for

collaborators

110 papers

hep-ph2023

Simplifying the large mass expansion

V. A. Smirnov

It is shown how the well-known large mass expansion can be simplified to obtain more terms of the expansion in an analytic form. Expanding two-loop four-point Feynman integrals whi…

hep-th2023★ 2 cited

Conservative binary dynamics at order in electrodynamics

Zvi Bern, Enrico Herrmann, Radu Roiban +4

We compute the potential-photon contributions to the classical relativistic scattering angle of two charged non-spinning bodies in electrodynamics through fifth order in the coupli…

hep-ph2022★ 24 cited

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A. V. Belitsky, A. V. Smirnov, V. A. Smirnov

We address the problem of evaluation of multiloop Feynman integrals by means of their Mellin-Barnes representation. After a brief overview of available capabilities though open sou…

hep-th2022

Exact off-shell Sudakov form factor in N=4 SYM

A. V. Belitsky, L. V. Bork, A. F. Pikelner +1

We consider the Sudakov form factor in N=4 SYM in the off-shell kinematical regime, which can be achieved by considering the theory on its Coulomb branch. We demonstrate that up tw…

hep-ph2022★ 1 cited

The vertex at four loops and hard matching coefficients in SCET for various currents

Amlan Chakraborty, Tobias Huber, Roman N. Lee +5

We compute the four-loop corrections to the Higgs-bottom vertex within massless QCD and present analytic results for all color structures. The infrared poles of the renormalized fo…

hep-ph2022★ 52 cited

Quark and gluon form factors in four-loop QCD

Roman N. Lee, Andreas von Manteuffel, Robert M. Schabinger +3

We compute the photon-quark and Higgs-gluon form factors to four-loop order within massless perturbative Quantum Chromodynamics. Our results constitute ready-to-use building blocks…