150 citations · 367 across the 13 of their papers we have counts for
15 papers
One-Loop Calculations in Effective Field Theories with GoSam-3.0
Jens Braun, Benjamin Campillo Aveleira, Gudrun Heinrich +5
We present a major update of the one-loop generator GoSam, containing performance improvements as well as new features, in particular functionalities that facilitate calculations b…
Master integrals for semi-inclusive cuts of massless four-loop propagators
Vitaly Magerya, Levente Fekésházy
We present the analytic calculation of all master integrals for 3-, 4-, and 5-particle semi-inclusive cuts of four-loop massless propagators by means of differential equations. We…
Interpolating amplitudes
Víctor Bresó, Gudrun Heinrich, Vitaly Magerya +1
The calculation of scattering amplitudes at higher orders in perturbation theory has reached a high degree of maturity. However, their usage to produce physical predictions within…
Two-loop amplitudes for ttH production: the quark-initiated Nf-part
Bakul Agarwal, Gudrun Heinrich, Stephen P. Jones +5
We present numerical results for the two-loop virtual amplitude entering the NNLO corrections to Higgs boson production in association with a top quark pair at the LHC, focusing, a…
Evaluating scattering amplitudes with pySecDec 1.6
Vitaly Magerya
pSecDec is a computer tool to evaluate Feynman integrals and their weighted sums (amplitudes) using the method of sector decomposition and numerical integration. The new release of…
Rational Tracer: a Tool for Faster Rational Function Reconstruction
Vitaly Magerya
Rational Tracer (Ratracer) is a tool to simplify complicated arithmetic expressions using modular arithmetics and rational function reconstruction, with the main idea of separating…
Machine Learning and LHC Event Generation
Anja Butter, Tilman Plehn, Steffen Schumann +48
First-principle simulations are at the heart of the high-energy physics research program. They link the vast data output of multi-purpose detectors with fundamental theory predicti…
Loop integral evaluation and asymptotic expansion with pySecDec
Vitaly Magerya
The evaluation of higher-loop Feynman integrals is at the core of the quest to reduce the uncertainty of theoretical predictions and match experimental data from the LHC and future…
Targeting Multi-Loop Integrals with Neural Networks
Ramon Winterhalder, Vitaly Magerya, Emilio Villa +5
Numerical evaluations of Feynman integrals often proceed via a deformation of the integration contour into the complex plane. While valid contours are easy to construct, the numeri…
Calculating Four-Loop Corrections in QCD
S. Moch, V. Magerya
We review the current status of perturbative corrections in QCD at four loops for scattering processes with space- and time-like kinematics at colliders, with specific focus on dee…
Master integrals for all unitarity cuts of massless four-loop propagators
Vitaly Magerya, Andrey Pikelner
Among the unitarity cuts of massless 4-loop propagators two classes have remained unknown until recently: 2-loop 3-particle cuts, and 1-loop 4-particle cuts. In this article we sha…
Cutting massless four-loop propagators
Vitaly Magerya, Andrey Pikelner
Among the unitarity cuts of 4-loop massless propagators two kinds are currently fully known: the 2-particle cuts with 3 loops corresponding to form-factors, and the 5-particle phas…
Five-Particle Phase-Space Integrals in QCD
O. Gituliar, V. Magerya, A. Pikelner
We present analytical expressions for the 31 five-particle phase-space master integrals in massless QCD as an -series with coefficients being multiple zeta values of weight up t…
Five-Particle Phase-Space Integrals in QCD
O. Gituliar, V. Magerya, A. Pikelner
We present analytical expressions for the 31 five-particle phase-space master integrals in massless QCD as an -series with coefficients being multiple zeta values of weight up t…
Fuchsia: a tool for reducing differential equations for Feynman master integrals to epsilon form
O. Gituliar, V. Magerya
We present an implementation of the Lee algorithm, which for a given system of ordinary differential equations with rational coefficients $\partial_x\,\mathbf{…