Name: The 22nd Workshop of the LHC Higgs Working Group
Start: 2025-12-03T09:00:00+01:00
End: 2025-12-05T17:30:00+01:00
Location: CERN

The 22nd Workshop of the LHC Higgs Working Group

from Wednesday, December 3, 2025 (9:00 AM) to Friday, December 5, 2025 (5:30 PM)

Monday, December 1, 2025
Tuesday, December 2, 2025
Wednesday, December 3, 2025
9:00 AM Opening and joint LHC EFT / LHC Higgs plenary
9:00 AM - 10:35 AM
Room: 503/1-001 - Council Chamber
Contributions

9:00 AM Workshop opening - Ramona Groeber (Università di Padova and INFN, Sezione di Padova)

9:15 AM ATLAS Highlight talk (15'+5') - Lydia Brenner (Nikhef)

9:35 AM CMS Highlight talk (15'+5') - Jonathon Mark Langford (Imperial College)

9:55 AM Double Higgs Production via Vector Boson Fusion in SMEFT (15'+5') - Michal Jakub Ryczkowski (Università di Padova and INFN, Sezione di Padova)

10:15 AM Differential observables for Higgs-strahlung process to all orders in EFT (15'+5') - Sourav Bera (Tata Institute of Fundamental Research, Mumbai)
10:35 AM Coffee break
Coffee break
10:35 AM - 11:10 AM
Room: 61/1-201 - Pas perdus
11:10 AM Joint LHC EFT / LHC Higgs plenary
11:10 AM - 12:40 PM
Room: 503/1-001 - Council Chamber
Contributions

11:10 AM Global fit of electroweak, Drell-Yan, Higgs, top, and flavour observables (15'+5') - Victor Miralles (University of Manchester)

11:30 AM POPxf: An Exchange Format for Polynomial Observable Predictions (15'+5') - Ken Mimasu (University of Southampton)

11:50 AM Probing H$\tau\tau$ Coupling and CP properties at FCC-ee (15'+5') - Sofia Giappichini (KIT - Karlsruhe Institute of Technology)

12:10 PM ATLAS+CMS Outlook talk (20'+10') [remote] - Brendon Bullard (SLAC)
12:40 PM Lunch break
Lunch break
12:40 PM - 2:00 PM
2:00 PM Plenary (WG1)
2:00 PM - 3:31 PM
Room: 503/1-001 - Council Chamber
Contributions

2:00 PM WG1 - Introduction - Alessandro Calandri (Università & INFN, Firenze) Alexander Karlberg (University of Oxford) Bernhard Mistlberger (SLAC) Hannah Arnold (Stony Brook University)

2:05 PM ggF (17'+5') - Stephen Jones (IPPP Durham)

2:27 PM VBF (17'+5') - Silvia Ferrario Ravasio (Università degli Studi di Torino)

2:49 PM VH (17'+5') [remote] - Suman Chatterjee (DESY)

3:11 PM Search for H -> bb and H -> cc at LHCb and future prospects (15'+5') [remote] - Qundong Han (Università & INFN, Padova)
3:30 PM Coffee break
Coffee break
3:30 PM - 4:00 PM
Room: 61/1-201 - Pas perdus
4:00 PM Plenary (WG3)
4:00 PM - 5:30 PM
Room: 503/1-001 - Council Chamber
Contributions

4:00 PM bbH subgroup report: Modelling bbH production for the LHC at 13.6 TeV - Christian Biello (ETH Zurich)

4:30 PM Report from the Extended Higgs Sector (theory+experiment) - Nikolaos Rompotis (University of Liverpool) Thomas Biekoetter (IFT Madrid)

5:00 PM Report from the NMSSM subgroup - Milada Margarete Mühlleitner (KIT)
Thursday, December 4, 2025
9:00 AM WG1 parallel session
9:00 AM - 10:30 AM
Room: 503/1-001 - Council Chamber
Contributions

9:00 AM All-hadronic VH measurements from ATLAS and CMS (15'+3') [remote] - Zhi Zheng (SLAC)

9:18 AM Charge asymmetry measurement in WH(->tautau) at CMS (15'+3') - Nicolò Trevisani (KIT)

9:36 AM Measurement of ttH(->multilepton) production at ATLAS (15'+3') - Nihal Brahimi (CNRS/IN2P3 LAPP)

9:54 AM ttH cross-section at NNLO+NNLL (15'+3') [remote] - Anna Kulesza (ITP Muenster)
WG2 parallel session: WG2 parallel session
WG2 parallel session
9:00 AM - 10:30 AM
Room: 40/S2-B01 - Salle Bohr
Contributions

9:00 AM EFT Theory Uncertainties at the LHC (25'+5') - Francesco Montagno (IFAE Barcelona)

9:30 AM Bridging theory and experiment in the search for CP violating Higgs interactions: Parametrizations and dictionary (25'+5') - Marta Fuentes Zamoro (UA Madrid)

10:00 AM Could electron-top interactions spoil the measurement of the Higgs trilinear? A quantitative estimate at future lepton colliders (25'+5') - Lucine Tabatt (Humboldt U. Berlin)
WG3 parallel session: WG3 parallel session
WG3 parallel session
9:00 AM - 10:30 AM
Room: 40/R-D10
Contributions

9:00 AM Using machine learning to predict large pseudoscalar H125 couplings to fermions (12'+3') - Rafael Boto (Instituto Superior Técnico)

9:15 AM A smoking gun signature of 3HDM (12'+3') [remote] - Atri Dey (DIAS)

9:30 AM LHC Signatures of a Vector-Like Top Partner and Charged Higgs Boson in the 2HDM-II (12'+3') - Mohammed Boukidi (IFJ PAN)

9:45 AM Search for an invisible scalar in $t\bar{t}$ final states at the LHC (12'+3') - Rodrigo Capucha (Centro de Física Teórica e Computacional, FCUL)

10:00 AM Distinguishing $A\to HZ$ and $H\to AZ$ with top-quark spin correlations (12'+3') - Francisco Arco (DESY)

10:15 AM Charged Higgs Pairs at the LHC: A NLO Analysis (12'+3') - Michael Spira (Paul Scherrer Institute)
WG4 parallel session: WG4 parallel session
WG4 parallel session
9:00 AM - 10:30 AM
Room: 4/3-006 - TH Conference Room
Contributions

9:00 AM The structure of quark mass corrections in the gg→HH amplitude at high-energy (15'+5') - Sebastian Eryk Jaskiewicz (University of Bern)

9:20 AM New HH BSM benchmarks (15'+5') - Milada Margarete Mühlleitner (KIT)

9:40 AM ATLAS+CMS HHH recent results (15'+5') - Marko Stamenkovic (Brown University)

10:00 AM Direct probes of the quartic Higgs self-coupling (15'+5') - Gilberto Tetlalmatzi-Xolocotzi (Siegen University)
10:30 AM Coffee break
Coffee break
10:30 AM - 11:00 AM
11:00 AM WG1 parallel session
11:00 AM - 12:30 PM
Room: 503/1-001 - Council Chamber
Contributions

11:00 AM Scattering amplitudes for 3-loop Higgs+Jet production (15'+3') - Xiang Chen (University of Zurich)

11:18 AM Interference effects in gluon-fusion Higgs boson production (15'+3') [remote] - Federica Devoto (SLAC)

11:36 AM Higgs off-shell measurements at CMS using Run 2 data (15'+3') - Pedro Fernandez Manteca (CERN)

11:54 AM Gluon fusion background for VBF (15'+3') [remote] - Christian Preuss (University of Goettingen)

12:12 PM Including QED effects in global PDF’s (15'+3') [remote] - Timothy J Hobbs (Argonne National Laboratory)
WG2 parallel session
11:00 AM - 12:30 PM
Room: 40/S2-B01 - Salle Bohr
Contributions

11:00 AM VHbb CP analysis (19'+3') [remote] - Ricardo Barrué (Marietta Blau Institute for Particle Physics, Vienna)

11:22 AM Search for anomalous HVV coupling in the gamma gamma final state (19'+3') - Federica De Riggi (Sapienza Università & INFN, Roma1)

11:44 AM Higgs-top coupling measurements from ATLAS and CMS (19'+3’) [remote] - Valentina 🐧 Vecchio (University of Manchester)

12:06 PM Higgs to charm coupling (19'+3') - Ming-Yan Lee (Rheinisch Westfaelische Tech. Hoch.)
WG3 parallel session
11:00 AM - 12:30 PM
Room: 40/R-D10
Contributions

11:00 AM LHC Constraints on Vector-like Quarks within the Two-Higgs-Doublet Model Framework (12'+3') [remote] - Khawla Salime (Cadi Ayyad University, Marrakech)

11:15 AM Strong First-Order Phase Transitions and Exotic Intermediate Phases in the CP-Conserving 2HDM (12'+3') - Christoph Borschensky (Karlsruhe Institute of Technology)

11:30 AM Electroweak Baryogenesis with BARYONET: Theory and Applications (12'+3') - Giulio Barni (IFT Madrid)

11:45 AM V-associated production & vector boson fusion of Higgs bosons as an LHC signature of CP violation (12'+3') - Alvaro Lozano Onrubia (IFT UAM-CSIC)

12:00 PM Probing Strong First-Order Electroweak Phase Transition scenarios in 2HDM with FCC-ee/CEPC (12'+3') - Anisha . (Karlsruhe Institute of Technology)
WG4 parallel session
11:00 AM - 12:30 PM
Room: 4/3-006 - TH Conference Room
Contributions

11:00 AM Public ggxy library (12'+3') - Kay Schonwald (U. of Zürich)

11:15 AM Higgs-Pair Production via Gluon Fusion: Top-Yukawa- and light-quark-induced electroweak Corrections (12'+3') - Sauro Carlotti (Karlsruher Institut für Technologie - ITP)

11:30 AM Electroweak corrections to Higgs boson pair production: The light quark case (12'+3') - Philipp Rendler (Institute for Theoretical Physics, KIT)

11:45 AM SMEFT and HEFT di-Higgs Event-Level Reweighting (12'+3') - Matheus Pereira Coelho (Center for Natural and Human Sciences, Federal University of ABC - UFABC)

12:00 PM Higgs pair production via gluon fusion to higher orders in HEFT (12'+3') - Konstantin Schmid (University and INFN Padova)

12:15 PM NMSSMScanner - Performing intelligent scans in the NMSSM parameter space (12'+3') - Martin Gabelmann (U. Freiburg)
12:30 PM Lunch break
Lunch break
12:30 PM - 2:00 PM
2:00 PM Plenary (WG2)
2:00 PM - 3:30 PM
Room: 503/1-001 - Council Chamber
Contributions

2:00 PM CP violation in the Higgs sector: Run 3 and beyond (19'+3') - Henning Bahl (ITP Heidelberg)

2:22 PM Higgs decays in the SMEFT at NLO (19'+3') - Matthew Forslund (Princeton Center for Theoretical Science)

2:44 PM SMEFT, Anomalous Couplings and CPV from CMS and ATLAS (19'+3') - Daniel Winterbottom (Imperial College)

3:05 PM Summary from the Higgs coupling measurements (Run 2 summary and available results from Run 3) from ATLAS and CMS (19'+3') - Serhat Ordek (Deutsches Elektronen-Synchrotron)
3:30 PM Coffee break
Coffee break
3:30 PM - 4:00 PM
Room: 61/1-201 - Pas perdus
4:00 PM Plenary (WG4)
4:00 PM - 5:30 PM
Room: 503/1-001 - Council Chamber
Contributions

4:00 PM ATLAS HH experimental overview (20'+5') - Valentina Cairo (CERN)

4:25 PM CMS HH experimental overview (20'+5') - Jin Wang (Chinese Academy of Sciences)

4:50 PM Summary of the HHH workshop in Dubrovnik (12'+3') - Greg Landsberg (Brown University)

5:10 PM NNLO+PS HH production with top-quark mass corrections in GENEVA (12'+3') - Giulia Marinelli (DESY)
7:30 PM Workshop dinner

7:30 PM - 10:30 PM
Friday, December 5, 2025
9:00 AM Plenary (WG1)
9:00 AM - 10:30 AM
Room: 503/1-001 - Council Chamber
Contributions

9:00 AM ttH (17'+5') - Sebastian Wuchterl (CERN)

9:22 AM Off-shell (17'+5') - Raoul Horst Rontsch (University of Milan and INFN, Milan)

9:44 AM Report 5 cross-section summary (15'+15') - Alexander Karlberg (University of Oxford)
10:30 AM Coffee break
Coffee break
10:30 AM - 11:00 AM
Room: 61/1-201 - Pas perdus
11:00 AM Cross-topic plenary
11:00 AM - 12:45 PM
Room: 503/1-001 - Council Chamber
Contributions

11:00 AM Updates from PDF global fits (20'+10') [remote] - Robert Samuel Thorne (University College London)

11:30 AM Path for deriving uncertainties for STXS 1.3 (10'+15') [remote] - Sarah Heim (Deutsches Elektronen-Synchrotron)

11:55 AM H+HF/Hbb across WG3 and WG4 (15'+5') - Elena Mazzeo (CERN) Stefano Manzoni (CERN)

12:15 PM Higgs physics at Future Colliders (20'+10') - Andrea Sciandra (Brookhaven National Laboratory)
12:45 PM Lunch break
Lunch break
12:45 PM - 2:00 PM
2:00 PM Lightning session for LHCHWG Report 5
2:00 PM - 3:30 PM
Room: 503/1-001 - Council Chamber
Contributions

2:00 PM [WG1] ttH NNLO+PS (7'+3') - Christian Biello (ETH Zurich)

2:10 PM [WG1] Two-loop QCD corrections to ZH and off-shell Z boson pair production in gluon fusion (7'+3') - Dominik Grau (KIT)

2:20 PM [WG1] gg→ZH : updated predictions at NLO QCD including SMEFT contributions (7'+3') - Benjamin Campillo Aveleira (KIT) Gudrun Heinrich (KIT)

2:30 PM [WG1] H+c/H+b associated production (7'+3') - Tiziano Bevilacqua (University of Zürich)

2:40 PM [WG2] CPV benchmarks (7'+3') - Rui Santos (ISEL and CFTC-UL)

2:50 PM [WG3] Charged Higgs Pairs at the LHC: A NLO Analysis (7'+3') - Lisa Biermann (PSI)

3:00 PM [WG4] BSM benchmarks and interference effects (7'+3') [remote] - Kateryna Radchenko Serdula (DESY)

3:10 PM [WG4] ggF HH QCD and EW higher-order corrections and theory uncertainties (7'+3') - Marco Bonetti (Eberhard Karls Universität Tübingen)
3:30 PM Coffee break
Coffee break
3:30 PM - 4:00 PM
Room: 61/1-201 - Pas perdus
4:00 PM Summary and closeout
4:00 PM - 5:30 PM
Room: 503/1-001 - Council Chamber
Contributions

4:00 PM WG1 Higgs XS&BR: Outlook and Plans (10'+5') [remote] - Alessandro Calandri (Università & INFN, Firenze)

4:15 PM WG2 Higgs Properties: Outlook and Plans (10'+5') - Jelena Jovicevic (Institute of Physics, University of Belgrade)

4:30 PM WG3 BSM Higgs: Outlook and Plans (10'+5') - Rui Santos (ISEL and CFTC-UL)

4:45 PM WG4 HH and multi-Higgs: Outlook and Plans (10'+5') - Arantxa Ruiz Martinez (Univ. of Valencia and CSIC)

5:00 PM Closing words from the Steering Committee (10'+5') - Gaetano Barone (Brown University)