Higgs Hunting 2023

Sep 11, 2023, 8:25 AM → Sep 13, 2023, 7:45 PM Europe/Paris

200/0-Auditorium - Auditorium P. Lehmann (IJCLab)

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.

Almost 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 13th workshop of the « Higgs Hunting » series organized on September 11-13th, 2023 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 a first look at 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.

Zoom link: https://ijclab.zoom.us/j/94890955802

Meenakshi Narain, a leader in our field, passed away on January 1, 2023 at the age of 58. The Higgs Hunting workshop expresses its deepest condolences to her friends and family. Among her many responsibilities, she co-convened the Energy Frontier group of the APS DPF Snowmass effort.    More information on her achievements can be found at  https://en.wikipedia.org/wiki/Meenakshi_Narain Her presentation on "Highlights from the Snowmass Summer meeting" given a few months ago at Higgs Hunting 2022 can be found here: https://videos.cern.ch/record/2296529

Registration deadline: September 5th, 2023

From_Orsay_and_Bures_IJCLab_com_2022.pdf

Zoom link

Affiche HH2023 Affiche-HH2023-A2.pdf affiche_Higgs_Hunting_2023-manet_040423-4K.jpg

Mon, September 11

8:30 AM → 9:55 AM Registration (with coffee and croissants)

9:55 AM → 10:00 AM Prelude by the organizers

Higgs Hunting 2023 Organisers intro.pdf

10:00 AM → 10:45 AM Plenary: Theory overview

Convener: Roberto Salerno (LLR)

10:00 AM Higgs production: A theory overview

Speaker: Aude Gehrmann-De Ridder (ETH Zurich)

HH23_AG.pdf

Video recording

10:45 AM → 12:30 PM Plenary: General combinations (Mass, width, CP + couplings)

Convener: Roberto Salerno (LLR)

10:45 AM Mass, width and CP measurements - ATLAS

Speaker: Carsten Burgard (Technische Universitaet Dortmund (DE))

Google slides

PDF Slides

Video recording

11:00 AM Mass, width and CP measurements - CMS

Speaker: Savvas Kyriacou (Johns Hopkins University (US))

Savvas_HiggsHunting.pdf

Video recording

11:15 AM Coupling measurements - ATLAS

Speaker: Martina Laura Ojeda (Deutsches Elektronen-Synchrotron (DE))

HiggsHunting_Hcouplings.pdf

Video recording

11:30 AM Coupling measurements - CMS

Speaker: Giacomo Ortona (Univ. di Torino e Sez. dell'INFN (IT))

HH2023.pdf

Video recording

11:45 AM Higgs combinations: 3 transparencies of comparison

Summary.pdf

11:50 AM Discussion

Video recording

12:30 PM → 2:00 PM Lunch

2:00 PM → 3:00 PM Topical talks: Part 1

Convener: Arely Cortes Gonzalez (Humboldt University of Berlin (DE))

2:00 PM Higgs global fits

Speaker: Victor Miralles (INFN Roma1 (IT))

Video recording

VMiralles_Higgs_Hunting.pdf

2:15 PM First measurement of the Higgs boson production cross-section at √s = 13.6 TeV in the H→ZZ*→ 4l channel with the ATLAS detector

Speaker: Alice Reed (Max Planck Society (DE))

AReed-run3-H4l-fidXS-HH2023.pdf

Video recording

2:27 PM The Two Scales of New Physics in Higgs Couplings

Speaker: Gabriele Rigo (IPhT Saclay (FR))

Presentation.pdf

Video recording

2:42 PM Signal-background interference effects in Higgs physics

Speaker: Federica Devoto (University of Oxford (UK))

Devoto.pdf

Video recording

3:00 PM → 4:05 PM Plenary: Higgs Self Coupling

Convener: Arely Cortes Gonzalez (Humboldt University of Berlin (DE))

3:00 PM Higgs Self Coupling - CMS

Speaker: Jona Motta (Ecole Polytechnique)

lambdaHHH@CMS_HH2023_JM.pdf

lambdaHHH@CMS_HH2023_JM_transitions.pdf

Video recording

3:15 PM Higgs Self Coupling - ATLAS

Speaker: Lidija Zivkovic (Institute of physics Belgrade (RS))

Video recording

Zivkovic_HiggsHunting23.pdf

3:30 PM 3 transparencies of comparison

arelycg_HiggsSelfCoupling_discussion.pdf

3:35 PM Discussion

Video recording

4:05 PM → 4:35 PM Coffee break

4:35 PM → 5:05 PM Plenary: Higgs and Cosmology

Convener: Daniela Bortoletto (University of Oxford (UK))

4:35 PM Higgs and Cosmology

Speaker: Raffaele Tito D'Agnolo (IPhT, Saclay)

Hunting_dagnolo.pdf

Video recording

5:05 PM → 5:45 PM Topical talks: Part 2

Convener: Daniela Bortoletto (University of Oxford (UK))

5:05 PM Search for Higgs boson pairs in the bbyy final state in ATLAS

Speaker: Tom Ingebretsen Carlson (Stockholm University (SE))

Search_for_Higgs_boson_pairs_in_the_bbyy_final_state_in_ATLAS.pdf

Video recording

5:17 PM Search for extra Higgs bosons through same-sign top-quark production in association with an extra jet in proton-proton collisions in CMS

Speaker: Ting-Hsiang Hsu (National Taiwan University (TW))

HH2023_YSF.pdf

Video recording

5:29 PM Electroweak Phase Transitions and Gravitational Radiation in ‘CP in the Dark’ with BSMPT

Speaker: Lisa Biermann (Karlsruhe Institute of Technology (DE))

lbiermann_higgshunting23.pdf

Video recording

5:45 PM → 6:35 PM Historical talk

Convener: Daniela Bortoletto (University of Oxford (UK))

5:45 PM The Long and Winding Road to the Discovery of the Higgs Boson

Speaker: Steve Myers (CERN)

230910 230911 History of the Hunt for Higgs.pdf

230910 230911 History of the Hunt for Higgs.pptx

Video recording

6:35 PM → 8:05 PM Welcome drink

Tue, September 12

9:20 AM → 9:55 AM Coffee

9:55 AM → 10:00 AM Prelude by the organizers

10:00 AM → 10:50 AM Topical talks: Part 3

Convener: Sven Heinemeyer (IFT/IFCA (CSIC))

10:00 AM Search for Higgs boson decays to a pair of pseudoscalars in CMS

Speaker: Stephanie Kwan (Princeton University)

Kwan h to aa Higgs Hunting 2023.pdf

Video recording

10:12 AM Search for ALPs in Higgs boson decays in ATLAS

Speaker: Olivera Vujinovic (Johannes Gutenberg Universitaet Mainz (DE))

higgshunting2023_vujinovic_v3.pdf

Video recording

10:24 AM Search for a standard model-like Higgs boson in the mass range between 70 and 110 GeV in the diphoton final state in proton-proton collisions at √s=13 TeV in CMS

Speaker: Prasant Kumar Rout (National Central University (TW))

HH_2023_IJClab_YSF_Prasant-3.pdf

Video recording

10:36 AM Searching for Low-Mass Resonances Decaying into W Bosons

Speaker: Guglielmo Coloretti (University of Zurich (UZH))

Paris_conference_final.pdf

Video recording

10:50 AM → 12:35 PM Plenary: BSM and rare H(125) decays

Convener: Sven Heinemeyer (IFT/IFCA (CSIC))

10:50 AM Additional scalar bosons - ATLAS

Speaker: Lerothodi Leeuw (Univ. of Johannesburg (ZA))

Higgs Hunting 2023 CDS Revision 1.pdf

Video recording

11:05 AM Additional scalar bosons - CMS

Speaker: Chayanit Asawatangtrakuldee (Chulalongkorn University (TH))

Talk_HH2023_CA.pdf

Video recording

11:20 AM BSM and rare H(125) decays - ATLAS

Speaker: Michael Kwok Lam Chu (Weizmann Institute of Science (IL))

230912_H125decay.pdf

Video recording

11:35 AM BSM and rare H(125) decays - CMS

Speaker: Jingyu Zhang (Florida State Univ. (US))

20230912-HiggsHunting-Jingyu.pdf

Video recording

11:50 AM 3 transparencies of comparison

sven.pdf

11:55 AM Discussion

Video recording

12:35 PM → 2:00 PM Lunch buffet

2:00 PM → 2:25 PM Plenary: CMS joker talk

Convener: Elisabetta Gallo (DESY & Univ. Hamburg)

2:00 PM ttH and tH measurements at CMS

Speaker: Philip Keicher (Univ. Hamburg (DE))

higg_hunting23_keicher.pdf

Video recording

2:25 PM → 3:30 PM Plenary: Vector Boson Scattering

Convener: Elisabetta Gallo (DESY & Univ. Hamburg)

2:25 PM VBS measurements - CMS

Speaker: Mattia Lizzo (Univ. di Firenze e Sez. dell'INFN (IT))

VBS measurements CMS.pdf

Video recording

2:40 PM VBS measurements - ATLAS

Speaker: Todd Zenger (Brandeis University (US))

ATLASVBS.pdf

Video recording

2:55 PM 3 transparencies of comparison

ElisabettaGallo_VBS_HH23.pdf

3:00 PM Discussion

Video recording

3:30 PM → 4:00 PM Plenary: Higgs Vacuum Metastability

Convener: Elisabetta Gallo (DESY & Univ. Hamburg)

3:30 PM Higgs Vacuum Metastability

Speaker: Arttu Rajantie (Imperial College)

Rajantie_Higgs_Hunting_2023.pdf

Video recording

4:00 PM → 4:30 PM Coffee break

4:30 PM → 5:30 PM Plenary: Effective Field Theories

Convener: Paolo Francavilla (INFN Pisa)

4:30 PM EFT - ATLAS

Speaker: Jay Sandesara (University of Massachusetts Amherst)

HiggsHunting2023_Jay_vFinal.pdf

Video recording

4:45 PM Higgs boson anomalous couplings and EFT at CMS

Speaker: Angela Taliercio (Northwestern Univ. (US))

Higgs_Hunting_Taliercio.pdf

Video recording

5:00 PM 3 transparencies of comparison

HH23_Effective Field Theories (2).pdf

5:05 PM Discussion

Video recording

5:30 PM → 6:20 PM Plenary: New analysis methods

Convener: Paolo Francavilla (INFN Pisa)

5:30 PM New analysis methods - ATLAS

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

higgs_hunting_2023.pdf

Video recording

5:45 PM New analysis methods - CMS

Speaker: Alessandro Calandri (ETH Zürich (CH))

Calandri_HH2023_12092023_final.pdf

Video recording

6:00 PM 3 transparencies of comparison

HH23_Methods (2).pdf

6:05 PM Discussion

Video recording

6:20 PM → 7:00 PM Plenary: Vision talk

Convener: Paolo Francavilla (INFN Pisa)

6:20 PM How Standard-Model-Like is the Higgs?

Speaker: Matthew McCullough (CERN)

HiggsHunting.pdf

Video recording

7:00 PM → 9:00 PM Dinner

Wed, September 13

9:25 AM → 10:00 AM Coffee

10:00 AM → 10:05 AM Prelude by the organisers

10:05 AM → 10:30 AM Plenary: ATLAS joker talk

Convener: Ursula Bassler (IN2P3)

10:05 AM Measurement of high-momentum Higgs boson production in association with a vector boson in the qqbb final state with the ATLAS detector

Speaker: Andrea Sciandra (UCSC)

ASciandra_VHqqbb_HiggsHunting2023

Video recording

10:30 AM → 10:45 AM Topical talks: Part 4

Convener: Ursula Bassler (IN2P3)

10:30 AM Higgs and (Light) Quark Studies at the ILC

Speaker: Yuichi Okugawa (Tohoku University (JP))

HiggsHunt2023.pdf

Video recording

10:45 AM → 1:00 PM Plenary: Higgs physics at future colliders

Convener: Ursula Bassler (IN2P3)

10:45 AM Theory prospects

Speaker: Andrea Wulzer (CERN)

talk_wulzer.pdf

Video recording

11:15 AM Experimental prospects at FCC

Speaker: Patrizia Azzi (INFN Padova)

Higgs@FCC-HiggsHunting2023.pdf

Video recording

11:45 AM Muon collider challenges and status

Speaker: Daniel Schulte (CERN)

Paris_2023.pdf

Paris_2023.pptx

Video recording

12:15 PM Discussion

1:00 PM → 2:30 PM LPNHE buffet

2:30 PM → 3:00 PM Plenary: Higgs constraints from low-energy measurements

Convener: Marco Pieri (Univ. of California San Diego (US))

2:30 PM Higgs constraints from low-energy measurements

Speaker: Stéphanie Roccia (LPSC Grenoble)

Higgs2023.pdf

Video recording

3:00 PM → 3:30 PM Topical talks: Part 5

Convener: Marco Pieri (Univ. of California San Diego (US))

3:00 PM Effective-field theory interpretations of Higgs boson production and decay rates with the ATLAS experiment

Speaker: Oleksii Lukianchuk (Université Paris-Saclay (FR))

HiggsHunting2023_Lukianchuk_split_animation.pdf

Video recording

3:12 PM SMEFT

Speaker: Maeve Madigan (University of Cambridge)

HiggsHunting_MM.pdf

Video recording

3:30 PM → 5:00 PM Plenary: Concluding talks

Convener: Marco Pieri (Univ. of California San Diego (US))

3:30 PM Theory concluding talk

Speaker: Massimiliano Grazzini (University of Zurich)

HiggsHunting23_MG.pdf

Video recording

4:15 PM Experimental concluding talk

Speaker: Andrea Rizzi (Universita & INFN Pisa (IT))

Higgs Hunting - Experimental Summary.pdf

Video recording

5:00 PM → 6:00 PM Farewell coffee