LoopFest XXIV

Session

Parallel Session d

28 May 2026, 14:00

Physics Department (Bldg. 510), Large Seminar Room (Brookhaven National Laboratory)

Conveners

Parallel Session d

• Juergen Reuter (DESY Theory Group)

8. Color coherent subtraction at NNLO QCD - The double-real case

Max Knobbe

28/05/2026, 14:00

Precision QCD calculations are essential for exploiting the physics potential of future high-luminosity lepton colliders such as the FCC-ee. We present a new local infrared subtraction scheme for next-to-next-to-leading order (NNLO) QCD calculations. The method employs scalar multipole radiator functions and pure splitting remainders that are fully color and spin dependent, valid across the...

11. Integrated subtraction terms and finite remainders for arbitrary massless QCD processes with jets at colliders using the nested soft-collinear subtraction scheme

Davide Maria Tagliabue (KIT - TTP)

28/05/2026, 14:20

The computation of higher-order corrections in QCD is complicated by infrared singularities, which must be isolated and cancelled to obtain a finite result.
I will present recent progress on the nested soft-collinear subtraction scheme, which provides a fully local and analytic subtraction for any QCD process with massless quarks and an arbitrary number of jets in the final state.

14. On the local IR structure of scattering amplitudes

Giulio Gambuti (ETH Zurich)

28/05/2026, 14:40

In this talk I will review recent progress in our understanding of infrared (IR) factorisation of scattering amplitude integrands. I will discuss how a detailed picture of the IR properties of gauge-theory scattering amplitudes can be exploited to derive finite-remainder integrands which are amenable to direct numerical integration, bypassing the complexity encountered in standard analytic...

54. Taking the First Step Toward the Higgs at N4LO in QCD: the Single-real Ingredient

Adi Suresh (SLAC)

28/05/2026, 15:00

We present partonic contributions to the inclusive gluon-fusion Higgs boson and Drell-Yan production cross sections at Hadron colliders at next-to-next-to-next-to-next-to leading order (N4LO). Specifically, we compute the “single-real” contributions: the interference of one-loop with two-loop amplitudes and the interference of three-loop (in the generalized leading-color limit) with tree-level...