High Precision for Hard Processes (HP2 2026)

Session

Track 2 - IR

T2

Oct 6, 2026, 4:00 PM

NTI Hörsaal, building 30.10 (KIT)

Conveners

Track 2 - IR: Parallel Session III

• Chiara Signorile-Signorile

52. Local Analytic Sector Subtraction with initial-state hadrons: Infrared kernels and their integration

Yashasvee Goel (University of Torino and INFN Torino)

10/6/26, 4:00 PM

In this talk, I will present our recent work on the analytic integration of infrared kernels within the framework of Local Analytic Sector Subtraction. We derive integrated counterterms for initial-state soft and collinear radiation using exact phase-space factorisations. Together with previous work on final-state radiation, these results provide the analytic building blocks needed for generic...

53. Recent developments in NNLOCAL

Gabor Somogyi (HUN-REN Wigner Research Centre for Physics)

10/6/26, 4:25 PM

1

Recently, we presented an extension of the CoLoRFulNNLO local subtraction framework for computing higher-order radiative corrections to hadron-initiated processes. Specifically, initial-state radiation has been regularized by introducing analytically integrable counterterms that lead to a relatively small number of counter-events. We have also released a proof-of-concept code, NNLOCAL, which...

59. A perturbative framework to probe infrared sensitivity in non-Abelian gauge theories

Dennis Horstmann (KIT)

10/6/26, 4:50 PM

1

Understanding the infrared sensitivity of perturbative predictions in QCD is important for assessing the magnitude of possible non-perturbative power corrections to processes with large momentum transfer. In renormalon models, this sensitivity can be related to computable dependences of perturbative quantities on a small gluon mass. However, this procedure cannot be applied to collider...

70. A general subtraction formula at NNLO in QCD with massless partons

Matteo Tresoldi (KIT TTP)

10/6/26, 5:15 PM

1

Beyond leading order in QCD, infrared singularities arise in real and virtual corrections and must cancel in physical observables. At NNLO, organising this cancellation becomes considerably more involved due to the presence of a myriad of unresolved limits. I will discuss how these can be systematically treated within the nested soft-collinear subtraction scheme for arbitrary processes with...