High Precision for Hard Processes (HP2 2026)

Session

Track 1 - Many Loops / Legs

T1

Oct 7, 2026, 10:30 AM

NTI Hörsaal, building 30.10 (KIT)

Conveners

Track 1 - Many Loops / Legs: Parallel Session IV

• Kay Schönwald

8. QCD decoupling @ five loops

Peter Marquard (DESY)

10/7/26, 10:30 AM

We present new results for the decoupling of the strong coupling constant at five loop order

69. Higher Intersection Pairings for Hard Processes

Giacomo Brunello (Scuola Normale Superiore)

10/7/26, 10:55 AM

1

Precision predictions for collider and gravitational-wave observables rely on the efficient evaluation and reduction of multi-loop Feynman integrals. I will present a method for constructing differential equations for Feynman integrals directly from multivariate intersection numbers, bypassing the solution of large systems of integration-by-parts identities. The method exploits the...

31. Three-loop amplitudes for quark-initiated diboson production in the leading-color approximation

Dhimiter Canko (University of Turin)

10/7/26, 11:20 AM

1

I will present the computation of the three-loop QCD scattering amplitudes for the production of two massive vector bosons in the quark annihilation channel, in the generalized leading-color approximation. These amplitudes constitute a key ingredient for the virtual contribution to the N3LO QCD corrections for electroweak gauge-boson pair production at hadron colliders and represent an...

29. Three-loop mixed QCD-EW form factors to the on-shell $Z$ production at hadron colliders

Tanmoy Pati (NISER-HBNI)

10/7/26, 11:45 AM

The Drell Yan process serves as standard candle in order to identify beyond Standard Model signatures. In this talk, we plan to focus on the virtual correction to the Z-production at the order $\mathcal{O}(\alpha_s^2\alpha)$, which constitute a subset of the factorizable electroweak-QCD corrections to Drell-Yan at resonance. Our results are complete analytic, which offers advantages in...