LHC HXSWG for BSM Higgs (WG3)

LHCHXSWG3 is responsible to provide support and recommendations for BSM Higgs related issues.

Group organization

Group conveners:

Anna Goussiou (Seattle) (2018) David Sperka (Boston University) (2018) Zhen Liu (U of Maryland) (2019) Pietro Slavich (LPTHE) (2017)
The conveners can be globally reached at the address lhc-higgs-bsm-convener@cernNOSPAMPLEASE.ch (only if you already subscribed to the WG3 mailing list or the general HXSWG mailing list, see here).

The WG has appointed contacts for several topics which are of interest to the group:

Extended Higgs Sector (neutral + charged Higgs bosons):

Task Involved persons Status Timescale
Keep an eye on potentially missing signatures   In progress Continuous

MSSM Higgs

Task Involved persons Status Timescale
Keep an eye on potentially missing signatures   In progress Continuous
WG support to the release of experimental likelihoods   In progress End 2020
Prioritize channels according to importance for end of LHC run2/3 or HL-LHC   In progress End 2020
A/H decay to SUSY states and corresponding ROOT files   In progress End 2020
Higgs pT public note   In progress (link) End 2020
Provide description and common tool for BSM Higgs pT calculation @ NLO+PS precision for gluon fusion   In progress (link) End 2020
ROOT files public note   In progress Nov 2020
Release ROOT files with proper HDECAY/FH matching   In progress Nov 2020
Release ROOT files for mh125 variants with negative mu   In progress Oct 2020
Update of the ROOT files (SM BRs, HDECAY modification of SUSY-QCD corrections to h/H/A -> bb for proper Delta_b terms, FH proper version)   In progress Oct 2020
Provide updated ROOT files for end RunII analyses   Complete End 2018
Provide benchmark scenario for low tanb using EFT approach   Complete End 2018
Provide new MSSM benchmark scenarios   Complete Sept 2018
Update SM parameters for MSSM calculations to be consistent with YR recommendations for SM calculations   Complete Sept 2018


Task Involved personsSorted ascending Status Timescale
Release of first set of benchmarks All Done Spring 2020
Additional benchmarks for H2->H1 Z All In progress December 2020
Re-interpetation of public experimental results Theorists In progress Continuous

Exotic Higgs Decays

Task Involved persons Status Timescale
Provide a benchmark for interpretations of h->aa->4y/2g2y searches Andrea Thamm DONE ALP benchmark
Add feasibility studies for h->2f+MET and develop benchmark scenarios predicting this type of signatures All planned lower priority
List uncovered, but well motivated, Higgs decays searches involving one or more displaced vertices. Brian Shuve In progress Spring 2021
What is the best way to present Higgs searches with displaced vertices to allow a simple recast by theorists? Theorists In progress winter 2021
Reinterpret prompt decays results for LLP signatures Experimentalists In progress within collaborations Full Run 2 papers
List of high priority channels for inclusion into BSM H fits and for which experimentalists are highly encouraged to publish likelihood scans (see p7-9). In the form of slides or a short document. Theorists In progress Spring 2021
Parameter calculations for Higgs rare decays beyond gamma+J/Psi, gamma+phi, gamma+Upsilon Matthias Koenig DONE Parameter_calculations
Provide final recommendations for h->W/Z+meson: link Zhen Liu, Stefan Alte under review  

bbH/bH Associated Production

Task Involved persons Status Timescale
TBA All Planned End of 3020

Other groups

Other useful information for LHC HXSG task forces/sub-groups that are relevant to WG3 activities:

  • Branching ratio sub-group: twiki is here, contact them by clicking here
  • Di-Higgs sub-group: twiki is here, contact them by clicking here.

SVN repository and tools

There is an SVN repository in which various WG3 items are stored. For the time being the following folders are

  • 2HDM
  • MSSM for neutral and charged Higgs

If you need to put something on SVN or you have some question please contact the WG3 conveners.

The list of the notes (public, interim recommendations and internal) is here.


Indico page of the WG3

Mailing lists

How to subscribe to mailing lists

The mail address for the WG3 is lhc-higgs-bsm@cernNOSPAMPLEASE.ch. All messages are archived here.

We highly recomment to also be subscribed to the general HXSWG mailing list: lhc-higgs@cernNOSPAMPLEASE.ch.

The conveners can be reached at lhc-higgs-bsm-convener@cernNOSPAMPLEASE.ch, but only if you already subscribed to either the WG3 mailing list or the generic lhc-higgs HXSWG mailing list.

WG3 related documentation

All the documents, public and internal can be found in the LHC HXSG Library.

  • arXiv:1607.05291: Intermediate mass region for charged Higgs production, Celine Degrande, Rikkert Frederix, Valentin Hirschi, Maria Ubiali, Marius Wiesemann, Marco Zaro.
  • LHCHXSWG-2015-002: public note on low tanbeta MSSM scenarios.
  • The 10th workshop of the LHC HXSG has a good overview of the topics studied in WG3 up to July 2015.
  • Low tanbeta scenarios note LHCHXSWG-INT-2015-004 , to become public soon.
  • Georgi-Machacek VBF H+ -> WZ Public LHC HXSG note LHCHXSWG-2015-001.
  • Heavy charged Higgs cross sections update: Martin Flechl, Richard Klees, Michael Kr\"amer, Michael Spira, Maria Ubiali, Improved cross-section predictions for heavy charged Higgs boson production at the LHC. arXiv:1409.5615, Phys.Rev. D91 (2015) 7, 075015.
  • Interim recommendations for the evaluation of Higgs production cross sections and branching ratios at the LHC in the Two-Higgs-Doublet Model, LHCHXSWG-2013-001.

General documentation

A great deal of information can be found in the three CERN Reports: Handbook of LHC Higgs Cross Sections:

  1. Inclusive Observables ( CERN-2011-002, arXiv:1101.0593).
  2. Differential Distributions ( CERN-2012-002, arXiv:1201.3084).
  3. Higgs Properties ( CERN-2013-004, arXiv:1307.1347).

-- MarioPelliccioni - 16 Jul 2014

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Topic revision: r124 - 2020-10-13 - ShufangSuExternal
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