Electroweak Corrections at Current and Future Accelerators

4 May 2026, 09:00 → 8 May 2026, 19:45 Europe/Berlin

02.430 (Mainz Institute for Theoretical Physics, Johannes Gutenberg University)

The registration closed on 09 January 2026, 11:59 P.M. CET.

The aim of this workshop is to critically discuss the precision issues in theory predictions and corresponding tools for the most important electroweak observables at the HL-LHC, future e+e- colliders, and low-energy experiments. This includes the assessment of the current state of the art including theoretical uncertainties, as well as the identification of necessary further improvements (i.e. mission-critical calculations) required to achieve the targeted physics goals of these experiments. We aim at preparing a short common document authored by all participants summarizing the outcome of the workshop (something akin to an “electroweak theory wish-list”).

Topics of interest include:

• LHC EW precision physics, extraction of pseudo-observables (POs) from hadron collider data, impact of PDFs
• High-precision Z-pole pseudo-observables, W mass, Higgs decay widths 
• Determination of POs at e+e- colliders (ee->ff, ee->WW, ee->ZH)
• Low-energy ee, ep, eC scattering (in particular relating to P2@MESA), weak charges of e, p, C, heavy nuclei
• Discussion of theory uncertainties

Monday 4 May

09:00 → 10:00 Check-in

10:00 → 10:45 LHC EW precision physics

10:00 Welcome

10:10 Experimental overview

Speaker: Matthias Schott (Uni. Mainz)

10:45 → 11:15 Coffee break

11:15 → 12:00 LHC EW precision physics

11:15 Theory overview of LHC precision physics

Speaker: Alexander Huss

14:00 → 15:00 LHC EW precision physics

14:00 High-mass Drell -Yan and it's role in precision EW tests

Speaker: Alessandro Vicini

14:20 Analytic EW corrections at high/low energies

Speaker: Hantian Zhang

14:40 Discussion

15:00 → 15:30 Coffee break

15:30 → 16:30 LHC EW precision physics

15:30 Discussion

Tuesday 5 May

09:30 → 10:30 Determination of pseudo-observables at e+e- colliders

09:30 Future e+e- colliders: Overview of envisioned measurements and precision goals

Speaker: Christophe Grojean

10:05 Discussion

10:30 → 11:00 Coffee break

11:00 → 12:00 Determination of pseudo-observables at e+e- colliders

11:00 Theory needs for extracting POs from e+e- data

Speaker: Fulvio Piccinini

11:35 Discussion

14:00 → 15:00 Determination of pseudo-observables at e+e- colliders

14:00 WW at threshold

Speaker: Juergen Reuter

14:20 QED factorization and resummation/showering

Speaker: Alan Price

14:40 Impact of PDFs on DY and MW

15:00 → 15:30 Coffee break

15:30 → 16:30 Determination of pseudo-observables at e+e- colliders

15:30 Discussion

Wednesday 6 May

09:30 → 10:30 Predictions for pseudo-observables

09:30 Status of predictions for POs in the SM

Speaker: Giuseppe Degrassi

10:05 Massive multi-loop integrals -- analytical methods

Speaker: Dr Ekta Chaubey

10:30 → 11:00 Coffee break

11:00 → 12:00 Predictions for pseudo-observables

11:00 Massive multi-loop integrals -- numerical methods

Speaker: Johann Usovitsch

11:20 Discussion

14:00 → 15:00 Predictions for pseudo-observables

14:00 Precision beyond the SM

Speaker: Sally Dawson

14:35 Higher-order corrections to Higgs observables

Speaker: Jian Wang

15:00 → 15:30 Coffee break

15:30 → 16:30 Predictions for pseudo-observables

15:30 Discussion

Thursday 7 May

09:30 → 10:30 Low-energy electron scattering

09:30 Parity-violating e-e scattering: Experimental status and prospects

Speaker: Krishna Kumar

09:55 Low-energy e-e/e-p/e-N scattering -- theory overview

Speaker: Mikhail Gorshteyn (JGU)

10:30 → 11:00 Coffee break

11:00 → 12:00 Low-energy electron scattering

11:00 NNLO EW corrections to e-e scattering

Speaker: Dr Lisong Chen (KPH-JGU)

11:20 Moller scattering with McMule

Speakers: Ms Sophie Kollatzsch (PSI), Mr David Radic (PSI)

11:45 Discussion

14:00 → 15:00 Low-energy electron scattering

14:00 Parity-violating e-p and e-N scattering: Experimental status and prospects

Speaker: Frank Maas

14:25 TBA

14:45 Discussion

15:00 → 15:30 Coffee break

15:30 → 16:30 Low-energy electron scattering

15:30 Electroweak radiative corrections to e-N scattering for MESA

Speaker: Prof. Charles J. Horowitz (Indiana University)

15:50 Discussion

Friday 8 May

09:30 → 10:30 Theory uncertainties

09:30 How to estimate theory uncertainties

Speaker: Georg Weiglein

10:05 Correlations of theory uncertainties, including parametric uncertainties

Speaker: Jonas Lindert

10:30 → 11:00 Coffee break

11:00 → 12:00 Theory uncertainties

11:00 Modeling uncertainties

11:20 Discussion

13:45 → 14:30 Organization of document write-up

14:30 → 15:00 Coffee break

15:00 → 16:30 Organization of document write-up