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Higgs Hunting 2022

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

200/0-Auditorium - Auditorium P. Lehmann

IJCLab

IJCLab Orsay (Monday) & LPNHE Paris (Tuesday & Wednesday)
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Description

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 12th workshop of the « Higgs Hunting » series organized on September 12-14th, 2022 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.

Current plans are for the workshop to be held in person once again, to bring back 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.

 

Registration deadline: September 5th, 2022

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From_Orsay_and_Bures_IJCLab_com_2022.pdf
Monday Sept 12th Zoom room
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Tuesday Sept 13th Zoom room
Wednesday Sept 14th Zoom room
Valérie Brouillard & Emilie Bonnardel
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Registration
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Participants
212 Voir la liste complète
  • lun. 12 septembre
  • mar. 13 septembre
    • 09:20
      Coffee Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
    • 24
      Prelude by the organizers Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      All recordings
    • Young scientist forum: Part 3 Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      Président de session: Sven Heinemeyer (IFT/IFCA (CSIC))
      • 25
        SM and BSM Higgs searches at LHCb
        Orateur: Laura Buonincontri (University of Padova)
        Recording
        SM and BSM Higgs searches at LHCb_LBuonincontri.pdf
      • 26
        Search for non-resonant Higgs boson pair production in the final state with two bottom quarks and two tau leptons with CMS

        In this talk the most recent results concerning the non-resonant Higgs boson pairs (HH) production in the final state with two tau leptons and two bottom quarks will be presented. The bbtautau channel represent a good compromise between a sizeable branching fraction (7.3%) and a very good purity of the tau pair selection. The HH search and the related 'kappa-modifiers' studies will be presented. The analysis is performed with the full LHC Run2 data. The sensitivity of the search is considerably improved compared to the previously published results with 2016 data due to increased luminosity, improved object identification algorithms, as for example Neural Network based tau lepton identification, and newly introduced machine learning based analysis techniques which allowed to enhance the sensitivity of the search.

        Orateur: Valeria D'Amante (University of Pisa and INFN)
        HiggsHunting.pdf
        Recording
      • 27
        Parametrized classifiers for optimal EFT sensitivity (Zoom)
        Orateur: Siyu Chen (EPF Lausanne)
        ParisTalk.pdf
        Recording
      • 28
        Search for CP violation in the tau Yukawa coupling with CMS

        Recent results from the study of the CP structure of the tau Yukawa coupling shed light on new experimental observables sensitive to CP violation. The talk will review the methods (impact parameter, neutral pion and polarimetric vector methods) and validation techniques employed during Run 2 for the different tau tau final states. The sensitivity of this measurement relies on an efficient hadronic tau identification and a precise separation of their different decay modes. Prospects for Run 3 and HL-LHC will be presented, including kinematic fit techniques to reconstruct the tau lepton momenta.

        Orateur: Mario Sessini (CNRS)
        higgshunting_HtautauCP_sessini.pdf
        Recording
    • Plenary: BSM and rare H(125) decays - including H→νν and LFV decays Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      Président de session: Sven Heinemeyer (IFT/IFCA (CSIC))
    • 12:45
      Lunch buffet LPNHE Paris

      LPNHE Paris
    • 35
      Prelude by the organizers Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      All recordings
    • Plenary: CMS joker talk Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      Président de session: Elizabeth Brost (Brookhaven National Laboratory)
    • Plenary: HH Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      Président de session: Elizabeth Brost (Brookhaven National Laboratory)
    • 15:55
      Coffee break LPNHE Paris

      LPNHE Paris
    • 41
      Prelude by the organizers Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      All recordings
    • Young scientist forum: Part 4 Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      Président de session: Anne-Catherine LE BIHAN (IPHC - CNRS)
      • 42
        Search for Lorentz boosted nonresonant HH production in the 4b final state with the CMS detector (Zoom)

        Double Higgs boson production (HH) allows us to measure the Higgs self-interaction and is uniquely sensitive to the structure of the Higgs potential. This talk will cover the production of HH→4b with highly boosted Higgs bosons in the gluon-fusion (ggF) and VBF production mode with 138 fb^{-1} of data collected with the CMS Experiment at sqrt(s) = 13 TeV [1]. The four-bottom-quark final state has the largest branching ratio (33.9%) amongst all HH decays, but is dominated by large backgrounds (QCD and top) and a poor decay channel resolution. To enhance the signal sensitivity, this analysis uses a dedicated jet identification algorithm developed to identify boosted H$\rightarrow$ bb jets, known as the ParticleNet Tagger. This analysis is very sensitive to anomalous quartic VVHH couplings and, for the first time, we exclude $\kappa_{2V}$ = 0 at >5 $sigma$, when other Higgs couplings are at their SM values. This talk will cover the analysis methods used and show the final sensitivity to different HH couplings ($\kappa_{\lambda}$, $\kappa_{2V}$ and $\kappa_{V}$). I'll also discuss future directions and scope of improvements for measuring the HH process.

        Orateur: Irene Dutta (California Institute of Technology (US))
        HiggsHunting_IreneDutta_130922_final.pdf
        Recording
    • Plenary: H EFTs and CP violation Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      Président de session: Anne-Catherine LE BIHAN (IPHC - CNRS)
    • Plenary: New opportunities for electroweak baryogenesis Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      Président de session: Anne-Catherine LE BIHAN (IPHC - CNRS)
    • 19:10
      Dinner Tour Zamansky (Sorbonne Université)

      Tour Zamansky

      Sorbonne Université

      Workshop dinner at "Tour Zamansky"

  • mer. 14 septembre
    • 09:20
      Coffee LPNHE Paris

      LPNHE Paris
    • 50
      Prelude by the organizers Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      All recordings
    • Plenary: ATLAS joker talk Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      Président de session: Marco Zito
    • Plenary: Future colliders Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      Président de session: Marco Zito (LPNHE Paris)
    • 13:15
      Lunch buffet LPNHE Paris

      LPNHE Paris
    • 58
      Prelude by the organizers Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      All recordings
    • Young scientist forum: Part 5 Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      Président de session: Michael Duehrssen-Debling (CERN)
      • 59
        HH production at the High-Luminosity LHC with CMS

        The High-Luminosity Large Hadron Collider (HL-LHC) is expected to deliver an integrated luminosity of up to 3000 fb-1. The very high instantaneous luminosity will lead to about 200 proton-proton collisions per bunch crossing (“pileup”) superimposed to each event of interest, therefore providing extremely challenging experimental conditions. CMS prospects on Higgs self-coupling measurements and HH production at the HL-LHC are presented.

        Orateur: Izzeddin Suat Donertas (Univ. Catholique de Louvain)
        Higgs_Hunting.pdf
        Recording
    • Plenary: New Physics implications of precise H couplings measurements Amphithéatre Charpak (LPNHE Paris)

      Amphithéatre Charpak

      LPNHE Paris
      Président de session: Michael Duehrssen-Debling (CERN)
    • Plenary: Concluding talks Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris
      Président de session: Michael Duehrssen-Debling (CERN)
    • 17:15
      Farewell coffee LPNHE Paris

      LPNHE Paris
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