LHC Higgs Cross Section Working Group 2 - Higgs Properties

Organization:

Topics:

  • STXS & differential XS
    • Recommendations for the fiducial and differential (Fid/DiffXS twiki) and simplified template cross sections (STXS) measurement and uncertainties computation.
    • Dedicated Fid./Diff./STXS twiki (with more details and contact emails).

  • PO
    • Overview of effective POs and tools for extraction from measurements
    • Reweighting code to apply to existing MC
    • HiggsPO model available in Madgraph with NLO QCD corrections for VH/VBF production

  • EFT
    • Tools: Implementation of Warsaw basis in FeynRules (available) with NLO QCD corrections in Madgraph (in development)
    • Validity (for discussion): defining the region of ci vs Lambda; square term gives an estimate of the uncertainty from higher powers of 1/Lambda
    • Note on STXS->EFT mapping (available)
    • Standard procedure for combined fit to Higgs+EW+Top data (for discussion)

Roadmap

Topic ShortDescription Deliverables Timescale Notes Status Contact
STXS & differential XS STXS stage 1.1 TH uncertainties treatment recommendation Note/journal Early summer 2019 to be ready for summer 2019 conferences In Progress Frank Tackmann
STXS & differential XS STXS stage 1.1 binning recommendation Note/arXiv/(journal) + Rivet code Early 2019 Concluded ArXiv LHCHXSWG-2019-003 Frank Tackmann
PO PO Summary for experiments. Scenarios for h>4l decays. Mapping to other frameworks. Note Early 2019 see presentation [*] Being written David Marzocca
EFT BSM Benchmarks and mapping to EFT. Determine benchmarks sensitive to differential and coupling measurements, define relevant EFT parameters Note Early 2019 Ready Soon Available Francesco Riva David Marzocca
EFT Interpretation Workflow Summary: Processes, Operators and BSM Interpretations Note Early 2019 Addendum to BSM Benchmarks note Not started yet  
EFT Fit to STXS using a standardized mapping of STXS stage 1.0 Note/(arXiv) Summer 2019 Concluded LHCHXSWG-2019-004 Chris Hays
EFT Global Fit in EFT Framework; inclusion of top and Electroweak measurements Note End 2019   In plan  
EFT High-Energy Higgs Probes: Longitudinal multiboson processes as tests of Higgs physics Note Early 2020   Not started yet Francesco Riva David Marzocca
[*] PO presentation by D.Mrazocca

Recent meetings:

Link to the dedicated indico category: WG2: Higgs Properties

Tools:

  • STXS & Differential XS
    • The STXS Rivet code
      • Download with a CERN account using svn+ssh://svn.cern.ch/reps/lhchiggsxs/repository/TemplateXS <http://svn.cern.ch/reps/lhchiggsxs/repository/TemplateXS>
      • Download this tar ball if you do not have a CERN account

  • EFT
    • Mapping of the STXS to HEL parameters
    • FeynRules implementation of the Warsaw basis (SMEFTsim)

Past projects

Tools

  • STXS.tgz: Revision 8941 of the STXS classification code
Topic attachments
I Attachment History Action Size Date Who Comment
Compressed Zip archivetgz STXS.tgz r1 manage 78.1 K 2018-05-15 - 08:27 ChristopherHays Revision 8941 of the STXS classification code
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Topic revision: r38 - 2019-09-12 - PredragMilenovic
 
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