132 citations · 936 across the 35 of their papers we have counts for
37 papers
The Stieltjes Bootstrap for Feynman Integrals
Hadrien Brochet, Maximilian Haensch, Johannes Henn +4
We prove that scalar Feynman integrals are Stieltjes functions in each kinematic variable , as well as in the particle masses, for arbitrary loop order, arbitrary nu…
Two-loop QCD amplitudes for production at the LHC in the leading-colour approximation
Matteo Becchetti, Dhimiter Canko, Xiang Chen +7
We present a numerical computation of the two-loop QCD scattering amplitudes for the production of a top-antitop quark pair in association with a boson () at the LHC…
NNLO QCD predictions for production at hadron colliders
Matteo Becchetti, Dhimiter Canko, Xiang Chen +10
The production of a top-antitop quark pair in association with a boson constitutes one of the heaviest final states currently studied at the Large Hadron Collider (LHC) at CERN…
The Four-Jet Rate in Electron-Positron Annihilation at Order
Xuan Chen, Dmitry Chicherin, Elliot Fox +6
We compute for the first time the production rate for four jets in electron-positron annihilation at next-to-next-to-leading order. Our calculation exhibits the highest final-state…
Higher-order QCD corrections to top-quark pair production in association with a jet
Simon Badger, Matteo Becchetti, Colomba Brancaccio +4
The production of a top-quark pair, the heaviest known elementary particle, in association with a light jet is a key process for studying the properties of the Standard Model of Pa…
Double virtual QCD corrections to jet production at the LHC
Simon Badger, Matteo Becchetti, Colomba Brancaccio +4
We present a leading colour computation of the double virtual contributions to top-quark pair production in association with a jet at a hadron collider at next-to-next-to-leading o…
Two-loop Feynman integrals for leading colour production at hadron colliders
Matteo Becchetti, Dhimiter Canko, Vsevolod Chestnov +3
We compute a complete set of the two-loop Feynman integrals that are required for the next-to-next-to-leading order QCD corrections to on-shell top-pair production in association w…
Canonical differential equations for the elliptic two-loop five-point integral family relevant to jet production at leading colour
Matteo Becchetti, Christoph Dlapa, Simone Zoia
We present differential equations (DEs) in canonical form for a family of two-loop five-point Feynman integrals containing elliptic functions and nested square roots. This is the o…
Numerical evaluation of two-loop QCD helicity amplitudes for at leading colour
Simon Badger, Matteo Becchetti, Colomba Brancaccio +2
We present the first benchmark evaluation of the two-loop finite remainders for the production of a top-quark pair in association with a jet at hadron colliders in the gluon channe…
Full-colour double-virtual amplitudes for associated production of a Higgs boson with a bottom-quark pair at the LHC
Simon Badger, Heribertus Bayu Hartanto, Rene Poncelet +3
We present the double-virtual amplitudes contributing to the production of a Higgs boson in association with a pair at the Large Hadron Collider. We perform the computat…
Two-loop amplitudes for corrections to production at the LHC
Simon Badger, Heribertus Bayu Hartanto, Zihao Wu +2
We present the two-loop helicity amplitudes contributing to the next-to-next-to-leading order QCD predictions for W-boson production in association with two photons at the Large Ha…
Two-Loop Five-Point Two-Mass Planar Integrals and Double Lagrangian Insertions in a Wilson Loop
Samuel Abreu, Dmitry Chicherin, Vasily Sotnikov +1
We consider the complete set of planar two-loop five-point Feynman integrals with two off-shell external legs. These integrals are relevant, for instance, for the calculation of th…
Lepton-Pair Scattering With an Off-Shell and an On-Shell Photon at Two Loops in Massless QED
Simone Zoia
I present the computation of the two-loop amplitudes for the scattering of a lepton pair with an off-shell and an on-shell photon in massless QED. We apply modern techniques develo…
Two-loop integrals for jet production at hadron colliders in the leading colour approximation
Simon Badger, Matteo Becchetti, Nicolò Giraudo +1
We compute the differential equations for the two remaining integral topologies contributing to the leading colour two-loop amplitudes for . We derive dif…
Learning Feynman integrals from differential equations with neural networks
Francesco Calisto, Ryan Moodie, Simone Zoia
We perform an exploratory study of a new approach for evaluating Feynman integrals numerically. We apply the recently-proposed framework of physics-informed deep learning to train…
Two-loop five-particle scattering amplitudes
Simone Zoia
I discuss the recent advances in the computation of two-loop scattering amplitudes for five-particle processes. The latter are fundamental ingredients to obtain predictions at the…
Lepton-pair scattering with an off-shell and an on-shell photon at two loops in massless QED
Simon Badger, Jakub Kryś, Ryan Moodie +1
We compute the two-loop QED helicity amplitudes for the scattering of a lepton pair with an off-shell and an on-shell photon, , using the approximation of mas…
All Two-Loop Feynman Integrals for Five-Point One-Mass Scattering
Samuel Abreu, Dmitry Chicherin, Harald Ita +4
We compute the complete set of two-loop master integrals for the scattering of four massless particles and a massive one. Our results are ready for phenomenological applications, r…
Scattering Amplitudes in Quantum Field Theory
Simon Badger, Johannes Henn, Jan Plefka +1
These lecture notes bridge a gap between introductory quantum field theory (QFT) courses and state-of-the-art research in scattering amplitudes. They cover the path from basic defi…
Isolated photon production in association with a jet pair through next-to-next-to-leading order in QCD
Simon Badger, Michal Czakon, Heribertus Bayu Hartanto +4
In this work, we provide a comprehensive set of differential cross-section distributions for photon + di-jet production in proton-proton collisions with next-to-next-to-leading ord…
-Module Techniques for Solving Differential Equations in the Context of Feynman Integrals
Johannes Henn, Elizabeth Pratt, Anna-Laura Sattelberger +1
Feynman integrals are solutions to linear partial differential equations with polynomial coefficients. Using a triangle integral with general exponents as a case in point, we compa…
Flavour anti- algorithm applied to production at the LHC
Heribertus Bayu Hartanto, Rene Poncelet, Andrei Popescu +1
We apply the recently proposed flavoured anti- jet algorithm to production at the Large Hadron Collider at TeV. We present results for the to…
Anomalous Ward identities for on-shell amplitudes at the conformal fixed point
Dmitry Chicherin, Johannes Henn, Simone Zoia
Conformal symmetry underlies many massless quantum field theories, but little is known about the consequences of this powerful symmetry for on-shell scattering amplitudes. Working…
NNLO QCD corrections to production at the LHC
Heribertus Bayu Hartanto, Rene Poncelet, Andrei Popescu +1
We compute theoretical predictions for the production of a W-boson in association with a bottom-quark pair at hadron colliders at next-to-next-to-leading order (NNLO) in QCD, inclu…