This page contains the discussion of the flavorful 2HDM, as proposed in this paper. The idea is that the mass of the light quark and lepton generations arises from a second Higgs doublet. The phenomenology is very distinct from the phenomenology of Type I-IV 2HDMs. We propose the search of the additional Higgs bosons (A, H, H^\pm) arising in this model.

Benchmark models and couplings

The phenomenology of the model is fixed by the following parameters: cos(alpha-beta), m_A, m_H, m_{H^\pm}, tan(beta). The couplings of the heavy Higgses break flavor universality and, in particular, the neutral Higgs couplings are given by


(Note that these expressions are valid neglecting terms suppressed by small second/third generation mass ratios.)

To simplify the parameter space, we propose to impose the alignment limit

  \begin{equation}<br />\cos(\alpha-\beta) =0<br /> \end{equation}

. This condition on the parameters keeps the most interesting features of the model.

Branching ratios and cross sections

Here you can find the branching ratios and the cross sections for the heavy scalar, H, and for the charged Higgs for a few different benchmarks:

* Neutral Higgs*

* Charged Higgs*

It is interesting to note that the quark-quark fusion cross section is very important in this model.

Contact people

Josh Eby (, Stefania Gori (, Douglas Tuckler (

-- StefaniaGori - 2017-06-20

Topic attachments
I Attachment History Action Size Date WhoSorted ascending Comment
PNGpng CouplingsH.png r1 manage 129.1 K 2017-06-20 - 17:34 StefaniaGori  
Edit | Attach | Watch | Print version | History: r6 | r4 < r3 < r2 < r1 | Backlinks | Raw View | Raw edit | More topic actions...
Topic revision: r2 - 2017-06-20 - StefaniaGori
    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    LHCPhysics All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright & 2008-2020 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback