LHC Higgs Cross Section Working Group 2 - Higgs Properties
Organization:
- Group meetings: WG2: Higgs Properties
- Mailing list: lhc-higgs-properties@cernNOSPAMPLEASE.ch
- git area : https://gitlab.cern.ch/LHCHIGGSXS/LHCHXSWG2
- Conveners: Daniele Barducci (INFN / Rome - Sapienza), Nicolas Berger (Annecy LAPP), Mauro Donega (ETH Zurich), Ken Mimasu (King’s College London)
- Previous conveners: Giuliano Panico (Firenze), Jorge de Blas (Granada), Predrag Milenovic (Belgrade), Marco Delmastro (Annecy), Francesco Riva (CERN), David Marzocca (Trieste), Mingshui Chen (Bejing), Chris Hays (Oxford), Adam Falkowski (Orsay-LPT), Gino Isidori (Zürich), Michael Dührssen (CERN) Andre David (CERN)
Topics:
- STXS & fiducial/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
- STXS->EFT mapping (available for HEL with SILH basis, in development for SMEFT with Warsaw)
- Standard procedure for combined fit to Higgs+EW+Top data (for discussion, in coordination with other LHC Physics groups)
- Initiative on establishing the EFT interpretation workflow guidelines/recommendations. A non-exhaustive list of aspects for discussion/clarification can be found here, together with google doc where anyone interested can sign-up for particular topics.
Roadmap
Topic |
ShortDescription |
Deliverables |
Timescale |
Notes |
Status |
Contact |
STXS & differential XS |
STXS stage 1.2 and TH uncertainties treatment recommendation |
Note/journal (+ Rivet code?) |
2020 |
To be ready in 2021 |
In Progress |
Frank Tackmann |
STXS & differential XS |
STXS stage 1.2 binning recommendation |
Note/arXiv/(journal) + Rivet code |
Concluded |
arXiv , to be updated with Stage 1.2 |
Definitions and Rivet routine done, documentation TBD |
Frank Tackmann |
STXS & differential XS |
STXS decay-side binning definition |
Note + Rivet code |
2022 |
Draft note |
Ongoing |
Michael Dührssen-Debling |
EFT |
BSM Benchmarks and mapping to EFT. Determine benchmarks sensitive to differential and coupling measurements, define relevant EFT parameters |
Note/arXiv |
Early 2019 |
Ready |
arXiv LHCHXSWG-2019-006 |
Francesco Riva David Marzocca |
EFT |
Interpretation Workflow Summary: Processes, Operators and BSM Interpretations |
Note |
2020-2021 |
Addendum to BSM Benchmarks note |
Started |
Jorge de Blas |
EFT |
Fit to STXS using a standardized mapping of STXS stage 1.2 |
Note/(arXiv) |
Summer 2019 |
LHCHXSWG-2019-004 |
Concluded |
Chris Hays |
EFT |
Global Fit in EFT Framework; inclusion of top and Electroweak measurements |
Note |
During 2021 |
|
In plan |
|
EFT |
High-Energy Higgs Probes: Longitudinal multiboson processes as tests of Higgs physics |
Note |
During 2021 |
|
Not started yet |
Francesco Riva David Marzocca |
[*]
PO presentation
by D.Marzocca
Recent meetings:
Link to the dedicated indico category:
WG2: Higgs Properties
- WG2 fid/diff/STXS meeting: ggH stage 1.2 uncertainties 04/11/2020
- Higgs measurements and their EFT interpretations 01/7/2020
- [STXS] Meeting on Updates to Uncertainties for Stage 1.2 25/06/2020
- EXP+TH LO/NLO EFT scheme discussion: 09/04/2020
- WG2-related plenary & discussion sessions in Oct 2019 general meeting 16/10/19
- STXS gg->H & ttH closure + diffXS variables discussion 16/9/19
- STXS discussion on ttH & ggH binning (for stage 1.2) 24/7/19
- STXS discussion at Les Houches 2019 12/6/19
- ttH STXS binning discussion 6/6/2019
- Joint VBF & fid/dif/STXS meeting: STXS qq→Hqq binning 17/1/19
- WG2 session in Dec 2018 general meeting 10/12/18
- WG2 fid/dif/STXS meeting: Presentation of results and STXS updates November 23
- CP and dimension-8 EFT November 13
- Validation and benchmarking of EFT tools June 14
- STXS meeting May 17
- WG2 session in March 2018 general meeting March 27
- Benchmark scenarios February 23 (2018)
- Winter meeting December 11 (2017)
- WG2 session in July 2017 general meeting July 14
- Joint EW+WG2 meeting July 10
- STXS meeting July 6
- Kickoff meeting May 8
Tools:
- EFT Interpretation Workflow Twiki page
- 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