The 23rd Workshop of the LHC Higgs Working Group

18 Nov 2026, 09:00 → 20 Nov 2026, 17:30 Europe/Zurich

222/R-001 (CERN)

 

The aim of the LHC Higgs Working Group (LHCHWG) is to collect and produce theoretical predictions relevant for Higgs physics in the Standard Model and beyond. Summaries of these activities have been made available in four CERN Reports: "Inclusive Observables" (CERN-2011-002), "Differential Distributions" (CERN-2012-002),  "Higgs Properties" (CERN-2013-004) and "Deciphering the nature of the Higgs Sector" (CERN-2017-002).

A new report (LHC Higgs WG Report 5), focusing on physics goals and recommendations for LHC Run 4, is currently being prepared.

The meeting will be in-person at CERN, however a Zoom connection will be available for those who cannot travel to CERN.

Zoom connection details will only be visible to registered participants.

The meeting will start with a joint LHC EFT / LHC Higgs session on Wednesday morning.

The workshop dinner will take place on Thursday evening, please see the dedicated page.

Please register if you plan to attend the workshop (either in-person or online).

Related events/meetings during the week:

10th General Meeting of the LHC EFT Working Group, 16th-18th of November

 

 

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LHCHWG2026.pdf

Wednesday 18 November

09:00 → 10:35 Joint LHC EFT / LHC Higgs plenary

Agenda

10:35 → 11:05 Coffee break

11:05 → 12:35 Joint LHC EFT / LHC Higgs plenary

Agenda

12:35 → 14:00 Lunch

14:00 → 16:30 WG1 plenary

14:00 ggF

Speaker: Yanping Huang (Chinese Academy of Sciences (CN))

14:20 VBF

Speaker: Christian Preuss (RWTH Aachen U)

14:40 bbH

Speaker: Alessandro Gavardi (Turin U.)

15:00 Boosted Higgs overview

Speakers: Dr Andrea Sciandra (Brookhaven National Laboratory (US)), Cristina Ana Mantilla Suarez (University of Virginia (US))

15:30 → 16:00 Coffee break

16:00 → 17:30 WG3 plenary

16:00 Report from the Extended Higgs Sector subgroup

16:25 Report from the SUSY Extended Higgs Sector subgroup

16:50 Report from the Exotic Higgs Decays subgroup

Thursday 19 November

09:00 → 10:30 WG1 parallel

09:00 Two-loop leading-color QCD corrections for Higgs plus two-jet in the heavy-top limit

Speaker: Giuseppe De Laurentis (University of Edinburgh)

09:20 Precision simulation of VBF Higgs production with Anomalous Couplings using Multi-Jet Merging (remote?)

Speaker: Terrance Figy (Wichita State University)

09:40 Flavour scheme matching for bbH predictions (remote)

Speaker: Rhorry Gauld (MPP Munich)

10:00 NLO EW corrections to gg -> gamma gamma + interference effects (remote)

Speaker: Haitao Li (Shandong University)

09:00 → 10:30 WG2 parallel

09:00 → 10:30 WG3 parallel

09:00 Neutral bosons in 2HDM (TBC)

Speaker: Sitian Qian (Northwestern University (US))

09:18 Exotic Higgs Decays talk (TBC)

09:36 Charged Higgs Pair Production at NNLO

09:51 ewk bg colliders (TBC)

09:00 → 10:40 WG4 parallel

09:00 Full Electroweak Corrections to Higgs Boson Pair Production in Gluon Fusion

Speaker: Philipp Rendler (Institute for Theoretical Physics, KIT)

09:20 NLO EW corrections to $gg\to HH$ with ggxy

Speaker: Daniel Stremmer (KIT)

09:40 Incorporating resonant–non-resonant interference in Higgs boson pair searches

Speaker: Chuxue Yang (Peking University (CN))

10:00 TRSMScans tool

Speaker: Tania Robens (Rudjer Boskovic Institute (HR))

10:20 Double Higgs production in the 2b2ɣ decay channel with MATRIX

Speaker: Paolo Garbarino (University of Zürich)

10:30 → 11:00 Coffee break

no coffee provided, please go to the restaurant for coffee

11:00 → 13:00 WG1 parallel

11:00 ggF2? (TBC)

11:20 gg−>ZH at NLO matched to parton showers with ggxy and POWHEG

Speaker: Daniel Stremmer (RWTH Aachen University)

11:40 ttH NNLO PS matching

Speaker: Chiara Savoini (University of Zurich)

12:00 K-factors for qqZZ and ggZZ from CMS [remote]

Speaker: Mohit Vir Srivastav (Johns Hopkins University (US))

11:00 → 12:30 WG2 parallel

11:00 → 12:30 WG3 parallel

11:00 Light pseudoscalars and mixing

Speaker: Michael Spira (Paul Scherrer Institute (CH))

11:00 → 12:30 WG4 parallel

11:00 Alignment and Enhanced Multi-Higgs Production

Speaker: Dr Subhojit Roy (Argonne National Laboratory)

11:20 Higgs Boson plus Bottom Pair Production at High Energies as di-Higgs Background

Speaker: Giacomo Ruisi (DESY Zeuthen)

11:40 Quadruple-Higgs boson production at the high-luminosity LHC

Speaker: Gilberto Tetlalmatzi-Xolocotzi (Siegen University)

12:00 Gluon Fusion Production of three Higgs Bosons in HEFT

Speaker: Jens Braun (Karlsruhe Institute of Technology (KIT))

12:30 → 14:00 Lunch

14:00 → 15:30 WG2 plenary

15:30 → 16:00 Coffee break

16:00 → 17:30 WG4 plenary

16:00 ATLAS HH experimental overview

16:25 CMS HH experimental overview

16:50 NNLO+PS Higgs-pair production in MiNNLOPS

Speaker: Francesco Garosi

17:10 Massive logs & top mass scheme uncertainty

Speaker: Sebastian Eryk Jaskiewicz (Universitaet Bern (CH))

19:30 → 22:30 Conference dinner

Fondue (or dairy-free option) at Cave Valaisanne. Please register and pay before 4th November if you plan to attend.

Friday 20 November

09:00 → 10:30 Cross-topic plenary

09:00 Exotic Higgs Decays (15' + 5') [remote]

Speaker: Tim Cohen (University of Oregon)

09:20 Dark Showers Task Force -- Higgs-mediated processes (15' + 5') [remote]

Speaker: Cesare Cazzaniga (DESY)

09:40 Reinterpretation Working Group (15' + 5')

Speaker: Jonas Würzinger (TUM)

10:00 Updates from PDF global fits (20' + 10')

Speaker: Emanuele Roberto Nocera (University of Torino and INFN)

10:30 → 11:00 Coffee break

11:00 → 12:30 WG1 plenary

11:00 ttH/tH

Speaker: Ximo Poveda Torres (IFIC, CSIC‐UV (ES))

11:20 OffShell

Speakers: Li Yuan (Beihang University (CN)), Xinmeng Ye (University of Michigan (US))

11:40 VH

Speaker: Marco Vitti (University of Bologna and INFN Bologna)

12:00 Higgs Dalitz decays

Speaker: Emre Sitti

12:30 → 14:00 Lunch

14:00 → 15:30 Next steps after Report 5

14:00 WG4 [15+7.5']

14:22 WG3 [15+7.5']

14:45 WG2 [15+7.5']

Speaker: Jonathon Mark Langford (Imperial College (GB))

15:07 WG1 [15+7.5']

Speaker: Robin Hayes (Nikhef National institute for subatomic physics (NL))

15:30 → 16:00 Coffee break

16:00 → 17:30 Summary and close out

16:00 WG4

16:20 WG3

Speaker: Davide Zuliani (Universita e INFN, Padova (IT))

16:40 WG2

17:00 WG1

17:20 Steering Committee Closeout

Speaker: Arely Cortes-Gonzalez (University of Tokyo (JP))