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Higgs Hunting 2022

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

200/0-Auditorium - Auditorium P. Lehmann

IJCLab

IJCLab Orsay (Monday) & LPNHE Paris (Tuesday & Wednesday)
250
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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

Registration
Registration
Participants
  • Alberto Carnelli
  • Alessandra Cappati
  • Alexander Held
  • Andrea Cardini
  • Anne-Catherine Le Bihan
  • Arif Akhundov
  • Arthur Schaffer
  • Ashley McDougall
  • Aydan Garibli
  • Bob Cousins
  • Brendon Bullard
  • Carlos Quezada
  • Carlos Wagner
  • Chi Lung Cheng
  • Christina Reissel
  • Christophe Grojean
  • Christophe Ochando
  • daniel FOURNIER
  • Daniela M. Rebuzzi
  • Dermot Moran
  • Elizabeth Brost
  • Emilian Dudas
  • Fabio Maltoni
  • Fabio Monti
  • Francois Vannucci
  • Gautier Hamel de Monchenault
  • Giacinto Piacquadio
  • Giuseppe Callea
  • Gregorio Bernardi
  • Hamzeh Khanpour
  • Howard Haber
  • Hua-Sheng Shao
  • Huanguo Li
  • Ioannis Plakias
  • Irene Dutta
  • Jie Gao
  • Johann Collot
  • Juan José Sanz-Cillero
  • Juan Salvador Tafoya Vargas
  • Julie Malcles
  • Karl Jakobs
  • khalid goure
  • Konstantinos Nikolopoulos
  • Laura Buonincontri
  • Laurent Vacavant
  • Lopamudra Nayak
  • Louis Fayard
  • Luca Cadamuro
  • Luca Fiorini
  • Lydia Iconomidou-Fayard
  • Malak Ait Tamlihat
  • Marcel Rieger
  • Marco Zito
  • Mario Sessini
  • María Teresa Dova
  • Maxence Draguet
  • Md Alam
  • MD RAJU
  • Michael Duehrssen
  • Muhammad Ibrahim Abdulhamid
  • Nan Lu
  • Neelam Kumari
  • Nicolas Berger
  • Ning Chen
  • Oleksii Lukianchuk
  • OLGA FELIX BELTRAN
  • Oliver Baker
  • Paraskevas Sphicas
  • Peter Jenni
  • Prasenjit Sanyal
  • Ram Krishna Sharma
  • Reina Camacho Toro
  • Reisaburo Tanaka
  • Ricardo Gonçalo
  • Roberto Salerno
  • Romain Kiba Bassandi
  • Saskia Falke
  • Saurabh Kumar Shukla
  • Shahzad Ali
  • Siyuan Yan
  • Stéphane Lavignac
  • Suat Donertas
  • Suzanne GASCON-SHOTKIN
  • Sven Heinemeyer
  • Tatsuya Masubuchi
  • Tejinder Virdee
  • Thomas STREBLER
  • Tisa Biswas
  • Tong Li
  • Toni Sculac
  • Ulrich GOERLACH
  • Valeria D'Amante
  • Vera Maiboroda
  • Vladimir Pastushenko
  • Xiaotong CHU
  • Yara Do Amaral Coutinho
  • Yiwen Wen
  • YUAN-TANG CHOU
  • Yufeng Wang
  • Yves Sirois
  • Zhengguo Zhao
Valérie Brouillard & Emilie Bonnardel
    • 8:30 AM 9:55 AM
      Registration (with coffee and croissants) 1h 25m 200/0-Auditorium - Auditorium P. Lehmann

      200/0-Auditorium - Auditorium P. Lehmann

      IJCLab

      250
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    • 9:55 AM 10:00 AM
      Prelude by the organizers 5m 200/0-Auditorium - Auditorium P. Lehmann

      200/0-Auditorium - Auditorium P. Lehmann

      IJCLab

      250
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    • 10:00 AM 10:45 AM
      Plenary: Theory overview 200/0-Auditorium - Auditorium P. Lehmann

      200/0-Auditorium - Auditorium P. Lehmann

      IJCLab

      250
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      Convener: Paris Sphicas (CERN/University of Athens)
      • 10:00 AM
        Theory of Higgs and di-Higgs production 35m
    • 10:45 AM 12:30 PM
      Plenary: H(125) bosonic and fermionic decays 200/0-Auditorium - Auditorium P. Lehmann

      200/0-Auditorium - Auditorium P. Lehmann

      IJCLab

      250
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      Convener: Paris Sphicas (CERN & University of Athens)
      • 10:45 AM
        H(125) bosonic decays in the ATLAS experiment 15m
        Speaker: Rustem Ospanov (University of Science and Technology of China, Hefei)
      • 11:00 AM
        H(125) bosonic decays — CMS 15m
        Speaker: Toni Sculac (University of Split)
      • 11:15 AM
        H(125) fermionic decays in the ATLAS experiment 15m
        Speaker: Giuseppe Callea (University of Glasgow)
      • 11:30 AM
        H(125) fermionic decays — CMS 15m
        Speaker: Christina Reissel (ETH Zürich)
      • 11:45 AM
        H(125) bosonic and fermionic decays: 3 transparencies of comparison 5m
      • 11:50 AM
        Discussion 40m
    • 12:30 PM 2:05 PM
      Lunch 1h 35m Bures cafeteria (Orsay)

      Bures cafeteria

      Orsay

    • 2:05 PM 2:10 PM
      Prelude by the organizers 5m 200/0-Auditorium - Auditorium P. Lehmann

      200/0-Auditorium - Auditorium P. Lehmann

      IJCLab

      250
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    • 2:10 PM 3:10 PM
      Young scientist forum: Part 1 200/0-Auditorium - Auditorium P. Lehmann

      200/0-Auditorium - Auditorium P. Lehmann

      IJCLab

      250
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      Convener: Robert Cousins (University of California at Los Angeles (UCLA))
      • 2:10 PM
        Measurement of the Higgs boson mass in the H→ZZ→4l channel in ATLAS with the full Run 2 dataset 12m
        Speaker: Siyuan Yan (University of Oxford)
      • 2:22 PM
        Results from the ATLAS differential cross section measurement of ttW 12m
        Speaker: Brendon Bullard (Harvard University)
    • 3:10 PM 4:15 PM
      Plenary: H(125) General combination 200/0-Auditorium - Auditorium P. Lehmann

      200/0-Auditorium - Auditorium P. Lehmann

      IJCLab

      250
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      Convener: Robert Cousins (University of California at Los Angeles (UCLA))
      • 3:10 PM
        H(125) General combination — CMS 15m
        Speaker: Fabio Monti (Inst. of High Energy Physics)
      • 3:25 PM
        H(125) General combination in the ATLAS experiment 15m
        Speaker: Paolo Francavilla (University of Pisa and INFN)
      • 3:40 PM
        H(125) General combination : 3 transparencies of comparison 5m
      • 3:45 PM
        Discussion 30m
    • 4:15 PM 4:45 PM
      Coffee break 30m 200/0-Auditorium - Auditorium P. Lehmann

      200/0-Auditorium - Auditorium P. Lehmann

      IJCLab

      250
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    • 4:45 PM 5:45 PM
      Young scientist forum: Part 2 200/0-Auditorium - Auditorium P. Lehmann

      200/0-Auditorium - Auditorium P. Lehmann

      IJCLab

      IJCLab Orsay (Monday) & LPNHE Paris (Tuesday & Wednesday)
      250
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      Convener: Dermot Moran (Center for Energy, Environmental and Technological Research (CIEMAT))
      • 4:50 PM
        Combination of Higgs boson pair production and single Higgs production at the LHC with the ATLAS detector 12m
        Speaker: Alkaid Cheng (University of Wisconsin)
    • 5:45 PM 7:10 PM
      Historical talks: Ten years after the H discovery 200/0-Auditorium - Auditorium P. Lehmann

      200/0-Auditorium - Auditorium P. Lehmann

      IJCLab

      250
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      Convener: Dermot Moran (Center for Energy, Environmental and Technological Research (CIEMAT))
      • 5:45 PM
        The Genesis of ATLAS - The long journey to the Higgs boson discovery 40m
        Speaker: Peter Jenni (CERN and University of Freiburg)
      • 6:25 PM
        The Higgs boson Turns 10: CMS’ Journey 40m
        Speaker: Tejinder Virdee (Imperial College)
    • 7:10 PM 8:30 PM
      Welcome drink 1h 20m 200/0-Auditorium - Auditorium P. Lehmann

      200/0-Auditorium - Auditorium P. Lehmann

      IJCLab

      250
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    • 9:20 AM 9:55 AM
      Coffee 35m Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

    • 9:55 AM 10:00 AM
      Prelude by the organizers 5m Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

    • 10:00 AM 11:00 AM
      Young scientist forum: Part 3 Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

      Convener: Sven Heinemeyer (IFT/IFCA (CSIC))
      • 10:00 AM
        SM and BSM Higgs searches at LHCb 12m
        Speaker: Laura Buonincontri (University of Padova)
      • 10:12 AM
        Search for non-resonant Higgs boson pair production in the final state with two bottom quarks and two tau leptons with CMS 12m

        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.

        Speaker: Valeria D'Amante (University of Pisa and INFN)
      • 10:24 AM
        Search for Lorentz boosted nonresonant HH production in the 4b final state with the CMS detector 12m

        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.

        Speaker: Irene Dutta (California Institute of Technology)
    • 11:00 AM 12:45 PM
      Plenary: BSM and rare H(125) decays - including H→νν and LFV decays Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

      Convener: Sven Heinemeyer (IFT/IFCA (CSIC))
      • 11:00 AM
        Additional scalar bosons in the ATLAS experiment 15m
        Speaker: Xiaotong Chu (Beijing IHEP)
      • 11:15 AM
        Additional scalar bosons — CMS 15m
        Speaker: Yiwen Wen (DESY)
      • 11:30 AM
        BSM and rare H(125) decays in the ATLAS experiment 15m
        Speaker: Yuan-Tang Chou (University of Massachusetts, Amherst)
      • 11:45 AM
        BSM and rare H(125) decays — CMS 15m
        Speaker: Maxime Gouzevitch (IPNL)
      • 12:00 PM
        BSM and rare H(125) decays — 3 transparencies of comparison 5m
      • 12:05 PM
        Discussion 40m
    • 12:45 PM 2:20 PM
      Lunch buffet 1h 35m LPNHE Paris

      LPNHE Paris

    • 2:20 PM 2:25 PM
      Prelude by the organizers 5m Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

    • 2:25 PM 2:50 PM
      Plenary: ATLAS or CMS joker talk Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

      Convener: Elizabeth Brost (Brookhaven National Laboratory)
    • 2:50 PM 3:55 PM
      Plenary: HH Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

      Convener: Elizabeth Brost (Brookhaven National Laboratory)
      • 2:50 PM
        HH — ATLAS 15m
        Speaker: Zhe Yang (University of Michigan)
      • 3:05 PM
        HH — CMS 15m
        Speaker: Marcel Rieger (University of Hamburg)
      • 3:20 PM
        HH — 3 transparencies of comparison 5m
      • 3:25 PM
        Discussion 30m
    • 3:55 PM 4:25 PM
      Coffee break 30m LPNHE Paris

      LPNHE Paris

    • 4:25 PM 4:30 PM
      Prelude by the organizers 5m Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

    • 4:30 PM 4:45 PM
      Young scientist forum: Part 4 Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

      Convener: Anne-Catherine LE BIHAN (IPHC - CNRS)
      • 4:30 PM
        Differential and CP measurements in ttH(H→bb) with ATLAS 12m
        Speaker: Neelam Kumari (Centre de Physique des Particules de Marseille (CPPM), IN2P3-CNRS )
    • 4:45 PM 6:30 PM
      Plenary: H EFTs and CP violation Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

      Convener: Anne-Catherine LE BIHAN (IPHC - CNRS)
      • 4:45 PM
        H EFTs — CMS 15m
        Speaker: Ram Krishna Sharma (Inst. of High Energy Physics)
      • 5:00 PM
        Higgs Effective Field Theories results in the ATLAS experiment 15m
        Speaker: Alexander Held (New York University)
      • 5:15 PM
        CP violation — CMS 15m
        Speaker: Andrea Cardini (DESY)
      • 5:30 PM
        CP violation results in the ATLAS experiment 15m
        Speaker: Ricardo Jose Morais Silva Gonçalo (LIP, Lisbon)
      • 5:45 PM
        H EFTs and CP violation — 3 transparencies of comparison 5m
      • 5:50 PM
        Discussion 40m
    • 6:30 PM 7:00 PM
      Plenary: Phase transitions and baryogenesis Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

      Convener: Anne-Catherine LE BIHAN (IPHC - CNRS)
      • 6:30 PM
        Phase transitions and baryogenesis 30m
        Speaker: Marcela Carena (Fermilab)
    • 7:10 PM 9:10 PM
      Dinner 2h Tour Zamansky (Sorbonne Université)

      Tour Zamansky

      Sorbonne Université

      Workshop dinner at "Tour Zamansky"

    • 9:20 AM 9:55 AM
      Coffee 35m LPNHE Paris

      LPNHE Paris

    • 9:55 AM 10:00 AM
      Prelude by the organizers 5m Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

    • 10:00 AM 10:25 AM
      Plenary: ATLAS or CMS joker talk Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

      Convener: Marco Zito
    • 10:25 AM 12:55 PM
      Plenary: Future colliders Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

      Convener: Marco Zito (LPNHE Paris)
      • 10:45 AM
        Roadmap for a first strategy for Latin American physics 15m
        Speaker: Maria Teresa Dova (National University of La Plata)
      • 11:00 AM
        Highlights from the Snowmass Summer meeting 20m
        Speaker: Meenakshi Narain (Brown University)
      • 11:20 AM
        The Detector and Accelerator R&D roadmaps to future colliders 25m
        Speaker: Karl Jakobs (Albert-Ludwigs-Universität Freiburg)
      • 11:45 AM
        Discussion 40m
    • 12:55 PM 2:40 PM
      Lunch buffet 1h 45m LPNHE Paris

      LPNHE Paris

    • 2:40 PM 2:45 PM
      Prelude by the organizers 5m Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

    • 2:45 PM 3:15 PM
      Young scientist forum: Part 5 Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

      Convener: Michael Duehrssen-Debling (CERN)
      • 2:45 PM
        HH production at the High-Luminosity LHC with CMS 12m

        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.

        Speaker: Izzeddin Suat Donertas (Univ. Catholique de Louvain)
      • 2:57 PM
        Search for CP violation in the tau Yukawa coupling with CMS 12m

        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.

        Speaker: Mario Sessini (PHC, IN2P3-CNRS - ULP, UHA Mulhouse)
    • 3:15 PM 3:45 PM
      Plenary: New Physics implications of precise H couplings measurements Amphithéatre Charpak (LPNHE Paris)

      Amphithéatre Charpak

      LPNHE Paris

      Convener: Michael Duehrssen-Debling (CERN)
      • 3:15 PM
        New Physics implications of precise H couplings measurements 30m
        Speaker: Carlos Wagner (Argonne)
    • 3:45 PM 5:15 PM
      Plenary: Concluding talks Amphithéâtre Charpak (LPNHE Paris)

      Amphithéâtre Charpak

      LPNHE Paris

      Convener: Michael Duehrssen-Debling (CERN)
      • 3:45 PM
        Theory concluding talk 45m
        Speaker: Fabio Maltoni (Louvain)
      • 4:30 PM
        Experimental concluding talk 45m
        Speaker: Giacinto Piacquadio (Stony Brook)
    • 5:15 PM 6:15 PM
      Farewell coffee 1h LPNHE Paris

      LPNHE Paris