Name: The 21st Workshop of the LHC Higgs Working Group
Start: 2024-12-04T09:00:00+01:00
End: 2024-12-06T17:30:00+01:00
Location: No location set

The 21st Workshop of the LHC Higgs Working Group

from Wednesday, 4 December 2024 (09:00) to Friday, 6 December 2024 (17:30)

Monday, 2 December 2024
Tuesday, 3 December 2024
Wednesday, 4 December 2024
09:00 Opening and joint LHC EFT / LHC Higgs plenary
09:00 - 10:30
Room: 31/3-004 - IT Amphitheatre
Contributions

09:00 Workshop opening - Julie Malcles (IRFU-CEA, Université Paris-Saclay)

09:15 LHCb meets the LHC Higgs WG (10'+5') - Davide Zuliani (University and INFN Padova)

09:30 EFT/Higgs Experimental Summary (20'+10') - Tae Hyoun Park (Max-Planck Institute for Physics)

10:00 EFT Meets Cosmology (20'+10') - Johan Löfgren (Uppsala)
10:30 Coffee break
Coffee break
10:30 - 11:00
11:00 Joint LHC EFT / LHC Higgs plenary
11:00 - 12:45
Room: 31/3-004 - IT Amphitheatre
Contributions

11:00 STXS Predictions (12'+3') - Ken Mimasu (University of Southampton)

11:15 EFT Interpretation of CMS VH(bb) (15'+5') - Alessandro Calandri (ETH Zuerich)

11:35 Running Effects in Higgs SMEFT (15'+5') - Stefano Di Noi (KIT)

11:55 SMEFiT (15'+5') - Luca Mantani (IFIC Valencia)

12:15 SMEFT/Higgs Experimental Outlook (20'+10') - Giacomo Boldrini (LLR Palaisau - CNRS)
12:45 Lunch break
Lunch break
12:45 - 14:00
14:00 Plenary (WG1)
14:00 - 15:30
Room: 31/3-004 - IT Amphitheatre
Contributions

14:00 Introduction - Alessandro Calandri (ETH Zuerich) Alexander Karlberg (CERN) Bernhard Mistlberger (SLAC) Hannah Arnold (Stony Brook University)

14:10 ggF status report (17'+5') - Alessandra Cappati (Université Catholique de Louvain) Robin Hayes (Nikhef)

14:32 VBF status report (17+5') [remote] - Jiayi Chen (Simon Fraser University)

14:54 VH status report (17'+5') - Matthew Lim (University of Sussex)
15:30 Coffee break
Coffee break
15:30 - 16:00
16:00 Plenary (WG3)
16:00 - 17:30
Room: 31/3-004 - IT Amphitheatre
Contributions

16:00 MSSM working group summary (15'+3') - Emanuele Angelo Bagnaschi (INFN Frascati)

16:18 bbH: subgroup report and NNLO+PS generators in the massless and massive schemes (15'+3') - Christian Biello (Max-Planck Institute for Physics)

16:36 NMSSM subgroup report (15'+3') - Milada Margarete Muehlleitner (KIT)

16:54 Exotic decays subgroup: Axion-like particle connections to the Higgs and top (15'+3') - Anke Biekoetter (JGU Mainz)

17:12 Extended scalar sector subgroup report (15'+3') - Khawla Jaffel (University of Science and Technology of China)
Thursday, 5 December 2024
09:00 WG1 parallel session
09:00 - 12:22
Room: 40/S2-A01 - Salle Anderson
Contributions

09:00 Higgs+charm ATLAS (10'+10') - Elliot Reynolds (University of Kansas)

09:20 Higgs+charm CMS (10'+10') - Tiziano Bevilacqua (University of Zuerich)

09:40 yt-induced Hbb as a background for HH searches (17'+5') - Marco Zaro (Università degli Studi and INFN Milano)

10:02 ttHbb highlights/summary of the WG1 - ttH/tH workshop (10'+10') - Matthias Schroeder (University of Hamburg)

10:22 Updated ttHbb results ATLAS (10'+10') - Alexander Froch (Université de Genève)

10:42 VHcc ATLAS+CMS focusing on modelling uncertainties (20'+10') - Zhuoran Feng (Nikhef)

11:12 VHbb ATLAS+CMS focusing on modelling uncertainties (20'+10') - Christina Reissel (MIT)

11:42 PDF uncertainties on predictions for Higgs production in gluon-gluon fusion (15'+5') - Maria Vittoria Garzelli (University of Hamburg)
WG2 parallel session
09:00 - 12:00
Room: 40/S2-C01 - Salle Marie Sklodowska-Curie
Contributions

09:00 Exotic decays of Higgs bosons to LLPs (ATLAS and CMS) - Dominique Trischuk (Brandeis University)

09:25 A log story short: running contributions to radiative Higgs decays in SMEFT (20'+5') - Guilherme Guedes (DESY)

09:50 Interference effects in gg→H→Zγ beyond Leading Order (20'+5') [remote] - Federico Buccioni (Technical University of Munich)

10:35 CP-sensitive observables in STXS ttH cross sections (20'+5') - Alberto Carnelli (IRFU Saclay - CNRS)

11:00 Probing CPV with DPhijj in H→WW (ATLAS) (20'+5') [remote] - Cameron Clarry (University of Toronto)

11:25 Off-shell coupling measurements (CMS) (20'+5') - Andrei Gritsan (Johns Hopkins)
WG3 parallel session
09:00 - 12:22
Room: 6/R-012 - conference room
Contributions

09:00 Rare and Exotic Higgs decays in CMS (15'+3') - Lakshmi Pramod (DESY)

09:18 Rare and exotic Higgs decays in ATLAS (15'+3') - Diallo Boye (Brookhaven National Laboratory)

09:36 LLPs from Exotic Higgs decays using faraway sub-detectors (15'+3') - Nathan Grieser (University of Cincinnati)

09:54 Higgs Mass Predictions in the CP-Violating High-Scale NMSSM (15'+3') - Christoph Borschensky (KIT)

10:12 Recent developments in NMSSMCALC (15'+3') [remote] - Martin Gabelmann (DESY)

10:50 MSSM Higgs boson production via gluon fusion (15'+3') - Michael Spira (Paul Scherrer Institute)

11:08 Updates on charged Higgs cross sections (15'+3') - Emanuele Angelo Bagnaschi (INFN Frascati)

11:26 Extended scalars and dark matter (15'+3') - Rui Santos (ISEL and CFTC-UL)

11:44 Higgs to dark showers (15'+3') - Emre Sitti (ETH Zuerich)

12:02 Recasting in resonant di-Higgs searches (15'+3') - Daniele Barducci (University and INFN Pisa)
09:30 WG4 parallel session
09:30 - 12:00
Room: 31/3-004 - IT Amphitheatre
Contributions

09:30 Introduction - Arantxa Ruiz Martinez (IFIC Valencia) Fabio Monti (CERN) Ludovic Michel Scyboz (Monash University) Milada Margarete Mühlleitner (KIT) Stefano Manzoni (CERN)

09:40 Triple Higgs searches in ATLAS - William Balunas (University of Cambridge)

10:00 Overview of triple Higgs theory - Tania Natalie Robens (Rudjer Boskovic Institute)

10:30 Multi-Higgs Production and the Electroweak Phase Transition - Osama Karkout (Nikhef)

10:50 Effect of anomalous HHH and ZZHH couplings on the decay width of H→4l [remote] - Biswajit Das (The Institute of Mathematical Sciences, Chennai)

11:10 Double Higgs production in vector boson fusion at NLO QCD with anomalous couplings - Jens Braun (KIT)

11:30 Multi-Higgs production from VBS in HEFT (15'+5') - Javier Martínez Martín (Universidad Complutense de Madrid & IPARCOS)
12:30 Lunch break
Lunch break
12:30 - 14:00
14:00 Plenary (WG1) + Future colliders
14:00 - 15:30
Room: 31/3-004 - IT Amphitheatre
Contributions

14:00 ttH/tH status report (17'+5') - Judith Katzy (DESY)

14:22 Off-shell status report (17'+5') - Raoul Horst Roentsch (Università degli Studi and INFN Milano)

14:44 BR status report (10'+5') - Michael Spira (Paul Scherrer Institute)

15:00 Higgs physics at future colliders (20'+10') - Matthew Philip McCullough (CERN)
15:30 Coffee break
Coffee break
15:30 - 16:00
16:00 Plenary (WG2)
16:00 - 17:30
Room: 31/3-004 - IT Amphitheatre
Contributions

16:00 Measurements of Higgs couplings to fermions and interpretations of Higgs XS measurements at ATLAS and CMS (17'+5') - Jelena Jovicevic (Institute of Physics, University of Belgrade)

16:22 Measurements of Higgs couplings to bosons at ATLAS and CMS (17'+5') [remote] - Jeffrey Davis (Johns Hopkins)

16:44 BSM & SMEFT Interpretation of Higgs measurements at LHC and HL-LHC (17'+5') - Ken Mimasu (University of Southampton)

17:06 Non-linear CP violation (17'+5') [remote] - Akanksha Bhardwaj (Oklahoma State University)
19:30 Workshop dinner

19:30 - 22:30
Friday, 6 December 2024
09:00 Cross-topic plenary
09:00 - 11:35
Room: 4/3-006 - TH Conference Room
Contributions

09:00 Updates from PDF global fits (20'+10') - Joey Huston (Michigan State University)

09:30 STXS Overview (15'+5') [remote] - Matteo Bonanomi (University of Hamburg)

09:50 Finite Width and Interference (15'+5') - Georg Ralf Weiglein (DESY)

11:15 Accessing the Electroweak Phase Transition through Top Quark and Higgs Boson Production (15'+5') - Lisa Biermann (Paul Scherrer Institute)
11:35 Plenary (WG4)
11:35 - 13:05
Room: 4/3-006 - TH Conference Room
Contributions

11:35 Overview of HH searches at ATLAS - Arantxa Ruiz Martinez (IFIC Valencia)

11:50 Overview of HH searches at CMS - Torben Lange (National Institute of Chemical Physics and Biophysics, Tallinn)

12:05 VBF HH with Powheg - Simon Reinhardt (University of Tuebingen)

12:25 NLO EW corrections on gg→HH cross section [remote] - Huai-Min Yu (Peking University)

12:45 Resonant HH production: interference effects and higher-order corrections - Kateryna Radchenko Serdula (DESY)
13:05 Lunch break
Lunch break
13:05 - 14:00
14:00 Lightning session for LHCHWG Report 5
14:00 - 15:30
Room: 4/3-006 - TH Conference Room
Contributions

14:00 WG3: Rare and Exclusive Higgs boson decays (7'+3') - David d'Enterria (CERN) Van Dung Le (Ho Chi Minh City University)

14:10 WG3: Intelligent Scans in the NMSSM at Highest Precision (7'+3') - Felix Egle (KIT) Felix Egle (DESY)

14:20 WG1: Parton shower aspects of Vector Boson Fusion Higgs production (7'+3') [remote] - Jiayi Chen (Simon Fraser University)

14:30 WG1: Resummed predictions for VH (7'+3') [remote] - Kajal Samanta (IPPP Durham)

14:40 WG1: NLO ggZH differential prediction (7'+'3') [remote] - Marco Vitti (KIT)

14:50 WG2: Recommendation for ATLAS + CMS full-likelihood publications (7'+3') [remote] - Nicholas Wardle (Imperial College)

15:00 WG2: CPV STXS, CPV benchmark call in BSM models and dictionary note on different CPV parametrizations (7'+3') [remote] - Henning Bahl (Heidelberg University)

15:10 WG4: HH physics at 14 TeV (15'+5') [remote] - Javier Mazzitelli (Paul Scherrer Institute)
15:30 Coffee break
Coffee break
15:30 - 16:00
Room: 61/1-201 - Pas perdus - Not a meeting room -
16:00 Summary and closeout
16:00 - 17:30
Room: 4/3-006 - TH Conference Room
Contributions

16:00 WG1 Higgs XS&BR: Outlook and Plans (10'+5') [remote] - Hannah Arnold (Stony Brook University)

16:15 WG2 Higgs Properties: Outlook and Plans (10'+5') - Pier Paolo Giardino (UAM and IFT Madrid)

16:30 WG3 BSM Higgs: Outlook and Plans (10'+5') - Tatjana Lenz (University of Bonn)

16:45 WG4 HH and multi-Higgs: Outlook and Plans (10'+5') - Fabio Monti (CERN)

17:00 Closing words from the Steering Committee (10'+5') - Ennio Salvioni (University of Sussex)