Higgs Hunting 2026
IJCLab Orsay / APC Paris
The origin of Electroweak symmetry breaking is one of the central topics of research in fundamental physics. The discovery of a Higgs boson at CERN on July 4th, 2012, following a hunt that spanned several decades and multiple colliders, changed the landscape of these investigations and provided key evidence for the Brout-Englert-Higgs mechanism of mass generation through the spontaneous breaking of Electroweak symmetry.
More than ten years later, the hunt goes on several fronts, in particular for:
- New physics through precision studies of the properties of the Higgs boson : in particular its mass, spin and couplings to other Standard Model particles.
- New production and decay modes, in particular in processes involving multiple Higgs bosons which provide key insight into the shape of the Higgs potential.
- New Higgs-like states and signals for physics beyond the Standard Model.
The 16th workshop of the « Higgs Hunting » series organized on September 16-18, 2026 will present an overview of these topics, focusing in particular on new developments in the LHC Run-2 analyses, detailed studies of Higgs boson properties and possible deviations from Standard Model predictions. Highlights will also include new results from LHC Run 3 analyses, prospects from studies at future colliders, and recent theoretical developments.
The workshop will be held in person in Orsay, for the first day and Paris for the two following days, to continue the Higgs Hunting tradition of lively discussions during and after the sessions. Remote participation will also be made possible for those unable to attend in person. No registration fees are asked for remote participation.
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The existence of the Brout-Englert-Higgs field was proved in 2012 with the discovery of its associated particle by the ATLAS and CMS experiments at the LHC. The following year, the Nobel Prize in Physics was awarded jointly to François Englert and Peter Higgs since Robert Brout had already passed away at this time.
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Registration (with coffee and croissants) 55m 200/0-Cafétéria - Cafeteria 200 (IJCLab)
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Prelude from the organizers 5m
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Plenary: Theory overview 200/0-Auditorium - Auditorium P. Lehmann (IJCLab)Convener: Matthias Schroeder (University of Hamburg)
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Topical talks: Part 1 200/0-Auditorium - Auditorium P. Lehmann (IJCLab)Convener: Matthias Schroeder (University of Hamburg)
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Gauge anomalies on shell and collinear factorization 12mSpeaker: Edoardo Alviani (IJClab Orsay)
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Measurements of the Higgs boson inclusive and differential fiducial cross sections in the four-lepton decay channel with the ATLAS detector using partial Run 3 data 12mSpeaker: Elena Cuppini (Max Planck Society (MPP))
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Plenary: H(125) properties 200/0-Auditorium - Auditorium P. Lehmann (IJCLab)Convener: Matthias Schroeder (University of Hamburg)
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H(125) property measurements - ATLAS 20mSpeaker: Matthew Basso (TRIUMF (CA))
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H(125) property measurements - Overview 5mSpeaker: Matthias Schroeder (University of Hamburg)
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H(125) property measurements - Discussion of current status and prospects 40m
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Lunch 1h 5m Bures Cafeteria (IJCLab)
Bures Cafeteria
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Coffee 15m 200/0-Cafétéria - Cafeteria 200 (IJCLab)
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Topical talks: Part 2 200/0-Auditorium - Auditorium P. Lehmann (IJCLab)Convener: Nicolas CHANON (IP2I Lyon)
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Measurement of the CP structure of the Higgs boson to tau lepton Yukawa coupling at CMS 12mSpeaker: Lucas Russell (Imperial College, Univ. of London)
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Plenary: H(125) self-coupling and pair production 200/0-Auditorium - Auditorium P. Lehmann (IJCLab)Convener: Nicolas CHANON (IP2I Lyon)
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H(125) self-coupling and pair production - CMS 15mSpeaker: SOUMYA Mukherjee (Univ. of California San Diego (US))
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H(125) self-coupling and pair production - ATLAS 15mSpeaker: Shota Izumiyama (Nagoya University)
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H(125) self-coupling and pair production - Overview 5mSpeaker: Nicolas CHANON (IP2I Lyon)
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H(125) self-coupling and pair production - Discussion 30m
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Plenary: Analysis methods 200/0-Auditorium - Auditorium P. Lehmann (IJCLab)Convener: Nicolas CHANON (IP2I Lyon)
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Analysis methods - CMS 15mSpeaker: Zak Lawrence (Univ. Catholique de Louvain)
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Analysis methods - ATLAS 15mSpeaker: Thomas Strebler (CPPM, Aix-Marseille Université, CNRS/IN2P3 (FR))
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Analysis methods - Overview 5mSpeaker: Nicolas CHANON (IP2I Lyon)
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Analysis methods - Discussion 20m
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Coffee break 30m
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Topical talks: Part 3 200/0-Auditorium - Auditorium P. Lehmann (IJCLab)Convener: Suzanne GASCON (Ip2I Lyon)
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Search for nonresonant triple Higgs boson production in the six b quark final state in proton-proton collisions at CMS 12mSpeaker: Xinyue Geng (Peking University)
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Advances in Hadronic Tau Reconstruction and Identification in ATLAS Using Graph Neural Networks 12mSpeaker: Pradhan Sudev (University of Sheffield)
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Combined Run 2 and Run 3 Measurement of ttH and tH Production in H tautau with ATLAS 12mSpeaker: Morvan Vincent (IFIC (CSIC-UV) Valencia)
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Plenary: ATLAS Joker talk 200/0-Auditorium - Auditorium P. Lehmann (IJCLab)Convener: Suzanne GASCON (Ip2I Lyon)
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TBA 25mSpeaker: Salah-Eddine Dahbi (Academia Sinica, Taipei)
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Plenary: Historical talk 200/0-Auditorium - Auditorium P. Lehmann (IJCLab)Convener: Suzanne GASCON (Ip2I Lyon)
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A Half Century of the Standard Theory 40mSpeaker: David Gross (Kavli Institute for Theoretical Physics, UC Santa Barbara)
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Welcome cocktail 1h 30m 200/0-Auditorium - Auditorium P. Lehmann (IJCLab)
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Welcome coffee 30m APC Paris
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Plenary: CMS Joker talk Amphithéâtre Buffon (APC Paris)
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Convener: Sven Heinemeyer (IFT/IFCA (CSIC))-
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CMS Joker talk (TBA) 25mSpeaker: Davide Zuolo (University of Colorado - Boulder)
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Plenary: H(125) BSM aspects and searches for new scalar bosons Amphithéâtre Buffon (APC Paris)
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Convener: Sven Heinemeyer (IFT/IFCA (CSIC))-
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H(125) BSM aspects and searches for new scalar bosons - ATLAS 15mSpeaker: Edson Carquin Lopez (Universidad Tecnica Federico Santa Maria)
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H(125) BSM aspects and searches for new scalar bosons - CMS 15mSpeaker: Georgia Karapostoli (National Technical University of Athens)
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Status of deviations from the SM in the Higgs sector 35mSpeaker: Livia Soffi (INFN Rome)
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H(125) BSM aspects and searches for new scalar bosons - Overview 5mSpeaker: Sven Heinemeyer (IFT/IFCA (CSIC))
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H(125) BSM aspects and searches for new scalar bosons - Discussion 40m
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Topical talks: Part 4 Amphithéâtre Buffon (APC Paris)
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Convener: Sven Heinemeyer (IFT/IFCA (CSIC))-
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Accidentally light scalars: naturalness and cosmology 15mSpeaker: Giacomo Ferrante (Université Libre de Bruxelles)
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Phenomenology of the light CP odd Higgs 12mSpeaker: Claire Chevallier (IJCLab)
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Search for additional Higgs bosons decaying to a pair of tau leptons with CMS 12mSpeaker: Leyan Li (Peking Univ.)
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Lunch buffet 1h 25m APC Paris
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Plenary: Effective field theories Amphithéâtre Buffon (APC Paris)
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Convener: Pierre Savard (University of Toronto)-
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Effective field theories - Theory overview 20mSpeaker: Eleni Vryonidou (University of Cyprus)
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Effective field theories - CMS 15mSpeaker: Andrew Gilbert (LLR, Ecole Polytech., IN2P3-CNRS)
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Effective field theories - Overview 5mSpeaker: Pierre Savard (Toronto University)
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Effective field theories - Discussion 30m
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Topical talks: Part 5 Amphithéâtre Buffon (APC Paris)
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Convener: Pierre Savard (University of Toronto)-
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SMEFT fits 15mSpeaker: Marion Thomas (MPI Munich)
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Two-loop RGE effects in EFT fits 15mSpeaker: Alejo Rossia (Padova)
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Plenary: Vision talk Amphithéâtre Buffon (APC Paris)
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Convener: Pierre Savard (University of Toronto)-
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After the Higgs: Looking for the Universe Behind the Particle 40mSpeaker: Veronica Sanz (Universitat de Valencia)
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Dinner information 1m APC Paris
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Travel to Excursion and dinner at Musée d'Orsay 59m
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Visit of Musée d'Orsay and dinner 3h Musée d'Orsay, Paris
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Welcome coffee 30m APC Paris
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Topical talks: Part 6 Amphithéâtre Buffon (APC Paris)
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Convener: Daniela Bortoletto (University of Oxford)-
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Search for the Rare Higgs Boson Decay H → Zγ with Run 2 and Early Run 3 CMS Data 12mSpeaker: Jiehan He (Peking Univ.)
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Search for non-resonant Higgs boson pair production in the bbtautau final state using Run 2 + partial Run 3 data recorded by the ATLAS detector 12mSpeaker: Leonardo Splendori (CPPM Marseille)
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ZH cross section, Higgs Mass and Branching Ratio measurements in ZH events at FCC-ee, at 240 and 365 GeV 12mSpeaker: Tom Fournier (APC Paris)
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Plenary: Prospects for Higgs boson physics at future circular colliders Amphithéâtre Buffon (APC Paris)
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Convener: Daniela Bortoletto (University of Oxford)-
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Theory roadmap towards FCC 20mSpeaker: Laura Reina (Florida State University (US))
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Experimental roadmap towards FCC 20mSpeaker: Guy Wilkinson (University of Oxford)
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Status of CEPC 20mSpeaker: Yifang Wang (IHEP)
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Discussion 1h
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Lunch buffet 1h 15m APC Paris
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Plenary: Higgs boson and cosmology Amphithéâtre Buffon (APC Paris)
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Convener: Barbara Clerbaux (Université Libre de Bruxelles)-
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The Higgs boson and cosmology 30mSpeaker: Shinya Kanemura (Osaka University)
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Plenary: Concluding talks Amphithéâtre Buffon (APC Paris)
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Convener: Barbara Clerbaux (Université Libre de Bruxelles)-
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Theory concluding talk 45mSpeaker: Pier Monni (CERN)
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Experimental concluding talk 45mSpeaker: Marco DELMASTRO (CNRS/IN2P3 LAPP)
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Farewell coffee 1h APC Paris
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François Englert passed away on June 18th 2026. In 1964 , together with Robert Brout, he proposed that spontaneous symmetry breaking could provide masses for the mediators of the weak interactions, the W and Z bosons. At the same time, British physicist Peter Higgs had independently hypothesised the existence of the same mechanism.