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Extended Higgs Sector Subgroup of LHC HWG

The Extended Higgs Sector subgroup is responsible for providing support and recommendations for issues related to the (work in progress).


Group conveners:

Lidija Zivkovic (Belgrade) Mariarosaria d'Alfonso (MIT) Shufang Su (Arizona)
Nikolaos Rompotis (Liverpool) Santeri Laurila (CERN) Rui Santos (Lisbon)
    Tania Robens (Zagreb)

To reach all conveners, click here.


Indico page of the WG3 contains relevant meetings

GIT repository

Do we have git repository?

TWIKI with additional information

Ongoing work

  • Check physics case for 3HDM, LRS, CPV, SM+Triplet models, in case provide cross sections and BRs: Santos to write short summary of which code is good for which
  • Interface theory constraints for an additional singlet into ScannerS: done. The latest version of ScannerS that include a large number of models with extended scalar sectors is now available, see The code includes the usual theoretical constraints: stability and perturbativity and electroweak precision together with interfaces with several other codes. A description on how to check if a given point is allowed by the constraints can be done for the CxSM and is described in detail in the following presentation
  • Cross sections and BRs for 2HDM+singlet models (real & complex): Nikos Rompotis.
  • Inclusion of 2HDM electroweak baryogenesis information in electroweak phase transition properties by using the BSMPT code by Maggie: Maggie, Nikos Rompotis.
  • Theoretical predictions for interference effects for large width charged Higgs decays: done. Santos to write a short description of regions of parameter space that have large interference effects.
  • Expand 2HDM/MSSM H+ cross sections from 2 two 3 TeV: contact.
  • Provide benchmark scenarios for searches for H5 states in GM for masses below 200GeV: Heather Logan
  • Provide simulation tool for loop-induced H+->W+ gamma with fermiophobic H+ in GM: Heather Logan

Experimental results

  • CMS

Twiki revisions

-- LidijaZivkovic - 2021-03-10

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Topic revision: r6 - 2021-09-08 - SanteriLaurila
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