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Double Higgs Production at Colliders Workshop

→ America/Chicago
One West (WH1W) (Fermilab)

One West (WH1W)

Fermilab
Biagio Di Micco (Universita' degli Studi di Roma Tre e Istituto Nazionale di Fisica Nucleare (INFN)), Christoph Peter Englert (University of Glasgow (GB)), Giacomo Ortona (Centre National de la Recherche Scientifique (FR)), John Alison (University of Chicago (US)), Maxime Gouzevitch (Centre National de la Recherche Scientifique (FR)), Olivier Bondu (Universite Catholique de Louvain (UCL) (BE)), Sara Lynn Dawson (Brookhaven National Laboratory (US))
Description

This workshop aims at gathering together both theorists and ATLAS/CMS experimentalists to discuss recent results, analysis techniques and theoretical calculations of HH production.

  •  Recent results from LHC 
  •  Advances in theoretical calculations 
  •  Analysis techniques
  •  BSM phenomenology
  •  EFT interpretations

Organizing committee:
John Alison (Carnegie Mellon University)
Olivier Bondu (FNRS/CP3-U C Louvain) 
Sally Dawson (Brookhaven National Laboratory)
Biagio Di Micco (U/INFN Roma Tre)
Christoph Englert (U Glasgow)
Maxime Gouzevitch (CNRS/UCB Lyon 1-IPNLyon)
Giacomo Ortona (CNRS/LLR)

Local organization committee:
Luca Cadamuro (Florida U)
Marcela Carena (U Chicago/Fermilab)
Jacobo Konigsberg (Florida U)
Zhen Liu (Fermilab/U Maryland-chair)
Caterina Vernieri (Fermilab-chair)

LPC events committee:
Gabriele Benelli (Brown U)
Ben Kreis (Fermilab)
Nicola De Filippis (Politecnico & INFN Bari)

Diversity and inclusion at Fermilab
http://diversity.fnal.gov/policies/

 

ConferencePicture.jpg
HH_map.pdf
Poster
RestaurantsnearFermilab.pdf
Participants
108 View full list
  • Tuesday 4 September
    • Registration
    • Welcome and introduction
    • Summary: LHC status
      Conveners: Caterina Vernieri (Fermi National Accelerator Lab. (US)), John Alison (University of Chicago (US))
      • 3
        CMS experimental status on hh production search (20+5)
        Speaker: Abdollah Mohammadi (Kansas State University (US))
        HH_Abdollah.pdf
      • 4
        ATLAS experimental status on hh production search (20+5)
        Speaker: Marc Escalier (LAL-Orsay (FR))
        escalier_HH_workshop_Fermilab.pdf
    • 10:30
      Coffee break
    • Theory overview
      Convener: Zhen Liu (Fermilab)
    • Summary: Future colliders
      Convener: Nicola De Filippis (Politecnico e INFN Bari (IT))
      • 8
        HL-LHC projections and YR status (20+5)
        Speaker: Stefania Gori (University of Cincinnati (US))
        TalkFermilab.pdf
    • 13:00
      Lunch break
    • Summary: Future Colliders
      Convener: Nicola De Filippis (Politecnico e INFN Bari (IT))
    • Summary: Combination of single and double Higgs measurements
      Conveners: Biagio Di Micco (Universita' degli Studi di Roma Tre e Istituto Nazionale di Fisica Nucleare (INFN)), Maxime Gouzevitch (Centre National de la Recherche Scientifique (FR))
    • 16:00
      Coffee break
    • Discussion
      Conveners: Biagio Di Micco (Universita' degli Studi di Roma Tre e Istituto Nazionale di Fisica Nucleare (INFN)), Javier Mazzitelli (Universidad de Buenos Aires (AR)), John Alison (Carnegie-Mellon University (US)), Dr Ramona Groeber (IPPP Durham)

      1. ATLAS+CMS combination (Luca C., David W., Javier M.,  B. Di Micco) - Wednesday  Room Ramsey 

      • based on 2015+2016 in preparation of the Run-2 legacy

      • MC settings (NLO vs LO )

      • Single H+HH combination

      • Total cross section vs k_lambda + uncertainties

       

         2) How to make results public  (J. Allison, Max S., K. Leney) -  Friday 1W (17:30 - 18:30)

       

      • Tools to provide unfolded UL

        • How to handle bbb correlations?

      • Resonant: Gamma vs Mx plot?

        • How to reweight different widths?

      • cut based results

      • differential results in m_HH (truth vs. reco)

      • Special care for BDT-based results

       

        3) EFT (S. Di Vita, M. Gouzevitch, J. Robinson) [17:30 - 18:30] 11th  floor ROC

      • Which framework? More operators beyond O6

      • How to make EFT useful for model testing?

      • Which inputs from H and HH?

      • Which topology? ggF/VBF single H background?

      • Usage of shape benchmarks

       

      4) BSM  (M. Carena, K. Tschann-Grimm, Ian Lewis, Lian-Tao Wang, X. Carvalho) Wednesday 11th floor ROC - Room One West

      • Benchmark models : which one ?

        • Resonant: Is graviton still a good benchmark?

        • Interplay with VV

      • Motivations for H1->H2 h

      • Interference with SM HH (EWK-S, 2HDM) benchmark


       

      5)  ATLAS/CMS objects/analysis strategies (M.Kagan, F. Micheli, C.Vernieri) [Thursday 1W (5:00-5:45)]

      • Trigger strategies

      • B-tagging and b-jets (regression)

      • MET


       

      6) How to improve WWbb (W off-shell) [S. Shrestha, N. De Filippis - Thursday 11 ROC ]

    • FERMILAB visit: Welcome Reception
      list.pdf
      MapsDZero.pdf
      NuCamp.png
  • Wednesday 5 September
    • Theory
      Convener: Javier Mazzitelli
      • 13
        Monte Carlo modelling of HH
        Speaker: Eleni Vryonidou (CERN)
        hhFermilab.pdf
      • 14
        Full NLO QCD corrections to ggF HH production
        Speaker: Dr Julien Baglio (University of Tübingen)
        baglio_hh_fermilab_2018.pdf
      • 15
        Reinterpretation of non-resonant HH searches
        Speaker: Anamika Aggarwal (Nikhef National institute for subatomic physics (NL))
        HH_FNAL-050918.pdf
    • Objects and tools: b-jets
      Convener: Michael Aaron Kagan (SLAC National Accelerator Laboratory (US))
      • 16
        b-jet energy regression
        Speaker: Alexander Melzer (University of Bonn (DE))
        HHWS_bJetRegression.pdf
      • 17
        b-tagging : current and future performance
        Speaker: Dr Luca Mastrolorenzo (Rheinisch Westfaelische Tech. Hoch. (DE))
        Chicago_6_09_18_v2.pdf
    • Group picture
    • 11:00
      Coffee break
    • Experimental Signatures: H(bb)H(gammagamma)
      Conveners: Francesco Micheli (Eidgenoessische Tech. Hochschule Zuerich (ETH)), James Robinson (Deutsches Elektronen-Synchrotron (DE))
      • 18
        ATLAS experimental summary
        Speaker: Elizabeth Brost (Northern Illinois University (US))
        HH_workshop_ATLAS_yybb.pdf
      • 19
        CMS experimental summary
        Speaker: Maxime Gouzevitch (Centre National de la Recherche Scientifique (FR))
        Fermilab_Gouzevitch_HHbbgg.pdf
      • 20
        Plans and perspectives for Run II and beyond
        Speaker: David Delgove (Centre National de la Recherche Scientifique (FR))
        HHWorkshop_DDelgove.pdf
    • 13:00
      Lunch break
    • Experimental Signatures: H(bb)H(bb)
      Conveners: Caterina Vernieri (Fermi National Accelerator Lab. (US)), David Wardrope (University College London (UK))
      • 21
        b-tagging online, b-jet triggers and future plans
        Speaker: John Alison (University of Chicago (US))
        BJetTriggerStatusPlans.pdf
      • 22
        Identifying boosted H->bb
        Speaker: Michael Aaron Kagan (SLAC National Accelerator Laboratory (US))
        Kagan_BoostedH_2018.pdf
      • 23
        CMS Analysis Strategy, with focus on non-resonant
        Speaker: Andres Tiko (Universita e INFN, Padova (IT))
        slides_HH4b_Fermilab_tiko.pdf
      • 24
        ATLAS Analysis Strategy, with focus on non-resonant
        Speaker: Jana Schaarschmidt (University of Washington (US))
        ATLAS_4b_strategy.pdf
    • 16:00
      Coffee break
    • Discussion

      1. ATLAS+CMS combination (Luca C., David W., Javier M.,  B. Di Micco) - Wednesday  Room Ramsey 

      • based on 2015+2016 in preparation of the Run-2 legacy

      • MC settings (NLO vs LO )

      • Single H+HH combination

      • Total cross section vs k_lambda + uncertainties

       

         2) How to make results public  (J. Allison, Max S., K. Leney) -  Friday 1W (17:30 - 18:30)

       

      • Tools to provide unfolded UL

        • How to handle bbb correlations?

      • Resonant: Gamma vs Mx plot?

        • How to reweight different widths?

      • cut based results

      • differential results in m_HH (truth vs. reco)

      • Special care for BDT-based results

       

        3) EFT (S. Di Vita, M. Gouzevitch, J. Robinson) [17:30 - 18:30] 11th  floor ROC

      • Which framework? More operators beyond O6

      • How to make EFT useful for model testing?

      • Which inputs from H and HH?

      • Which topology? ggF/VBF single H background?

      • Usage of shape benchmarks

       

      4) BSM  (M. Carena, K. Tschann-Grimm, Ian Lewis, Lian-Tao Wang, X. Carvalho) Wednesday 11th floor ROC - Room One West

      • Benchmark models : which one ?

        • Resonant: Is graviton still a good benchmark?

        • Interplay with VV

      • Motivations for H1->H2 h

      • Interference with SM HH (EWK-S, 2HDM) benchmark


       

      5)  ATLAS/CMS objects/analysis strategies (M.Kagan, F. Micheli, C.Vernieri) [Thursday 1W (5:00-5:45)]

      • Trigger strategies

      • B-tagging and b-jets (regression)

      • MET


       

      6) How to improve WWbb (W off-shell) [S. Shrestha, N. De Filippis - Thursday 11 ROC ]

  • Thursday 6 September
    • Experimental Signatures: H(bb)H(tautau)
      Conveners: Katharine Leney (University College London (UK)), Luca Cadamuro (University of Florida (US))
    • 10:30
      Coffee break
    • Experimental Signatures: H(bb)H(tautau)
      Conveners: Katharine Leney (University College London (UK)), Luca Cadamuro (University of Florida (US))
      • 28
        ATLAS and CMS overview + comparison of selections and fitted variables
        Speaker: Arnaud Ferrari (Uppsala University (SE))
        HH-Fermilab-AF.pdf
      • 29
        ATLAS and CMS overview + comparison of reconstruction and bkg estimation methods **remote**
        Speaker: Francesco Brivio (Universita & INFN, Milano-Bicocca (IT))
        FBrivio_bbtt_HH2018.pdf
      • 30
        Trigger strategies for VBF HHbbtt **remote**
        Speaker: Chiara Amendola (LLR - Ecole Polytechnique (FR))
        Amendola_DoubleHiggsLHC.pdf
    • Theory
      Convener: Eleni Vryonidou (CERN)
      • 31
        Beyond the Standard Model HH production
        Speaker: Ian Lewis (The University of Kansas)
        IL_HH_FNAL.pdf
    • 13:00
      Lunch break
    • 14:00
      Fermilab director's welcome message
    • Theory
      Convener: Eleni Vryonidou (CERN)
      • 32
        The least studied coupling in (double) Higgs physics
        Speaker: Ian Low (Northwestern University)
        HH_by_Low.pdf
    • Experimental Signatures: H(bb)H(VV)
      Conveners: Dr Kuver Sinha (University of Oklahoma), Rami Kamalieddin (University of Nebraska Lincoln (US)), Suyog Shrestha (Ohio State University (US))
    • 16:00
      Coffee break
    • Experimental Signatures: H(bb)H(VV)
      Conveners: Dr Kuver Sinha (University of Oklahoma), Rami Kamalieddin (University of Nebraska Lincoln (US)), Suyog Shrestha (Ohio State University (US))
    • Discussion

      1. ATLAS+CMS combination (Luca C., David W., Javier M.,  B. Di Micco) - Wednesday  Room Ramsey 

      • based on 2015+2016 in preparation of the Run-2 legacy

      • MC settings (NLO vs LO )

      • Single H+HH combination

      • Total cross section vs k_lambda + uncertainties

       

         2) How to make results public  (J. Allison, Max S., K. Leney) -  Friday 1W (17:30 - 18:30)

       

      • Tools to provide unfolded UL

        • How to handle bbb correlations?

      • Resonant: Gamma vs Mx plot?

        • How to reweight different widths?

      • cut based results

      • differential results in m_HH (truth vs. reco)

      • Special care for BDT-based results

       

        3) EFT (S. Di Vita, M. Gouzevitch, J. Robinson) [17:30 - 18:30] 11th  floor ROC

      • Which framework? More operators beyond O6

      • How to make EFT useful for model testing?

      • Which inputs from H and HH?

      • Which topology? ggF/VBF single H background?

      • Usage of shape benchmarks

       

      4) BSM  (M. Carena, K. Tschann-Grimm, Ian Lewis, Lian-Tao Wang, X. Carvalho) Wednesday 11th floor ROC - Room One West

      • Benchmark models : which one ?

        • Resonant: Is graviton still a good benchmark?

        • Interplay with VV

      • Motivations for H1->H2 h

      • Interference with SM HH (EWK-S, 2HDM) benchmark


       

      5)  ATLAS/CMS objects/analysis strategies (M.Kagan, F. Micheli, C.Vernieri) [Thursday 1W (5:00-5:45)]

      • Trigger strategies

      • B-tagging and b-jets (regression)

      • MET


       

      6) How to improve WWbb (W off-shell) [S. Shrestha, N. De Filippis - Thursday 11 ROC ]

    • FERMILAB visit: Two Brothers Roundhousehttp://twobrothersbrewing.com/restaurants/roundhouse/
      list.pdf
      MapsDZero.pdf
      NuCamp.png
  • Friday 7 September
    • Objects and tools: jets and boosted techniques
      • 38
        Substructure for HH signatures
        Speaker: Marc Antoine Osherson (Rutgers, State Univ. of New Jersey (US))
        HHsubstrc_Sep2018.pdf
      • 39
        Jet and MET performance
        Speaker: Maximilian J Swiatlowski (University of Chicago (US))
        jetmet.pdf
    • Theory
      Convener: Ian Lewis (The University of Kansas)
      • 40
        Exotic decays in HH production
        Speaker: Brian Thomas Batell (University of Pittsburgh)
        Batell-FNAL-hh.pdf
    • 10:30
      Coffee break
    • Theory
      Convener: Ian Lewis (The University of Kansas)
    • Experimental Signatures: Other signatures
      Conveners: Christian Veelken (National Institute of Chemical Physics and Biophysics (EE)), Yaquan Fang (Chinese Academy of Sciences (CN))
      • 42
        The analysis of HH->WWgamma gamma with the ATLAS detector
        Speaker: Maosen Zhou (Chinese Academy of Sciences (CN))
        HH_WWyy_FNAL.pdf
      • 43
        HH->WW*WW* analysis with ATLAS detector
        Speaker: Liang Li (Shanghai Jiao Tong University (CN))
        HH4W_[DoubleHiggsWorkshop]_20180907.pdf
      • 44
        Reconstruction of the HH mass in the HH->4tau channel
        Speaker: Christian Veelken (National Institute of Chemical Physics and Biophysics (EE))
        svFit4tau_2018Sep07v1.pdf
      • 45
        The analysis of HH->4tau with the CMS detector
        Speaker: Saswati Nandan (Saha Institute of Nuclear Physics (IN))
        HHTo4tau.pdf
    • 13:00
      Lunch break
    • Experimental Signatures: Combination and other common topics
      Conveners: Arnaud Ferrari (Uppsala University (SE)), Maxime Gouzevitch (Centre National de la Recherche Scientifique (FR))
      • 46
        Interferences in searches for heavy Higgs bosons
        Speaker: Stefan Rainer Liebler (KIT - Karlsruhe Institute of Technology (DE))
        Interference_Liebler.pdf
      • 47
        ggHH generation and benchmarks
        Speakers: Alexandra Carvalho Antunes De Oliveira (Universita e INFN, Padova (IT)), Alexandra Carvalho Antunes De Oliveira (Universita e INFN, Padova (IT))
        HH_LHC_WS_Sep2018.pdf
      • 48
        VBF HH generation and benchmarks
        Speaker: Tyler James Burch (Northern Illinois University (US))
        vbf_hh_burch2018_final.pdf
      • 49
        Interference effects in the alignement scenario
        Speaker: Marcela Carena (Fermilab)
        slides.pdf
    • Theory overview: Wine and Cheese
      • 15:30
        Wine&Cheese
      • 50
        Reflections on Double Higgs Production at the LHC
        Speaker: Carlos E.M. Wagner (University of Chicago / Argonne National Laboratory)
        Fermilab.WC.09.18.pdf
    • Discussion
  • Saturday 8 September
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