The 21st Workshop of the LHC Higgs Working Group

Session

WG4 parallel session

5 Dec 2024, 09:30

31/3-004 - IT Amphitheatre (CERN)

Conveners

WG4 parallel session

• Arantxa Ruiz Martinez (IFIC Valencia)
• Milada Margarete Muehlleitner (KIT)

29. Introduction

Arantxa Ruiz Martinez (IFIC Valencia), Fabio Monti (CERN), Ludovic Michel Scyboz (Monash University), Milada Margarete Mühlleitner (KIT), Stefano Manzoni (CERN)

05/12/2024, 09:30

38. Triple Higgs searches in ATLAS

William Balunas (University of Cambridge)

05/12/2024, 09:40

39. Overview of triple Higgs theory

Tania Natalie Robens (Rudjer Boskovic Institute)

05/12/2024, 10:00

41. Multi-Higgs Production and the Electroweak Phase Transition

Osama Karkout (Nikhef)

05/12/2024, 10:30

Exploring the Higgs sector via multi-Higgs production searches is a main goal for run-3 and high-lumi LHC. Can these searches inform us about the electroweak phase transition and matter-antimatter asymmetry? We address this question in the context of the TRSM (Two-Real-Singlet Model), which has known benchmark points enhancing multi-Higgs production. We update the triple-Higgs production...

42. Effect of anomalous HHH and ZZHH couplings on the decay width of H→4l [remote]

Biswajit Das (The Institute of Mathematical Sciences, Chennai)

05/12/2024, 10:50

Despite the discovery of the Higgs boson, the Higgs sector of the standard model is still not fully established. In particular, the self-couplings of the Higgs boson and its couplings with gauge bosons are still to be fully determined. We consider electroweak corrections to the processes H --> ve ve~ vm vm~ and H --> e+ e- mu+ mu-. The corrections depend on the HHH coupling. We investigate...

43. Double Higgs production in vector boson fusion at NLO QCD with anomalous couplings

Jens Braun (KIT)

05/12/2024, 11:10

We present a calculation of the NLO QCD corrections to Higgs boson pair production in vector boson fusion, combined with the leading operators parametrising anomalous interactions in non-linear Effective Field Theory (HEFT). Based on our Monte Carlo implementation using GoSam+Whizard, we investigate the effects of anomalous Higgs couplings on various observables.

83. Multi-Higgs production from VBS in HEFT (15'+5')

Javier Martínez Martín (Universidad Complutense de Madrid & IPARCOS)

05/12/2024, 11:30

We computed some results for vector boson scattering  in HEFT for the production of 2, 3 and 4 Higgs bosons. This results are updated after the latest results from both CMS and ATLAS for single and double Higgs production.

40. Triple Higgs searches in CMS [tbc]