Two-Higgs-Doublet Model¶
The Two-Higgs-Doublet Model (THDM) extends the SM by one additional Higgs doublet field with hypercharge \(Y_S=1\). The most general CP-conserving softly-broken \(Z_2\)-symmetric renormalizable scalar potential reads
with \(\Phi_i\) being the Higgs doublets, and all parameters are real. Our implementation is consistent with the original literature [GH03], [BFL+12]. We choose the following set of physical parameters:
Basis |
THDM potential |
Gauge part |
---|---|---|
before SSB |
\(m_1\), \(m_2\), \(m_{12}\), \(\lambda_1\), \(\lambda_2\), \(\lambda_3\), \(\lambda_4\), \(\lambda_5\) |
\(g\), \(g^\prime\) |
Recola2 input |
\(M_{\mathrm{H}_l}\), \(M_{\mathrm{H}_h}\), \(M_{\mathrm{H}_a}\), \(M_{\mathrm{H}_c}\), \(c_{\alpha\beta}\), \(t_\beta\), \(\lambda_5\), \(M_\mathrm{W}\) |
\(\alpha_\mathrm{em}\), \(M_\mathrm{Z}\) |
The fields extend the ones in the SM by
Fields |
Recola identifier |
---|---|
\(H_\mathrm{l}\) |
|
\(H_\mathrm{h}\) |
|
\(H^+\), \(H^-\) |
|
\(H_a\) |
|
where \(H_\mathrm{l}\) is the lighter Higgs-boson which typically takes the role of the SM one.
THDM interface¶
The THDM comes with special functions which can be accessed Recola2:
|
Sets the value for \(\tan(\beta)\) and \(c_{\alpha\beta}\) to |
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Sets the value for \(\lambda_5\) to |
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Sets the yukawa type in the softly-broken Z2 symmetric THDM to |
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Sets the pole masses, widths of the light and heavy Higgs bosons to |
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Sets the pole mass and width of the pseudo-scalar Higgs boson ha. |
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Sets the pole mass and width of the charged Higgs boson hc. |
The standard renormalization schemes are accessed by the following functions:
Sets the renormalization scheme for the mixing angle \(\alpha\) to an \(\overline{\mathrm{MS}}\) scheme. |
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Sets the renormalization scheme for the mixing angle \(\beta\) to an \(\overline{\mathrm{MS}}\) scheme. |
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Sets the renormalization scheme for the mixing angle \(\alpha\) to an on-shell or BFM scheme. |
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Sets the renormalization scheme for the mixing angle \(\beta\) to an on-shell or BFM scheme. |
For details on the schems we refer to [DDL18]. On request we can provide other renormalization schemes.
Releases¶
UFO model files¶
References
- BFL+12
G. C. Branco, P. M. Ferreira, L. Lavoura, M. N. Rebelo, Marc Sher, and Joao P. Silva. Theory and phenomenology of Two-Higgs-Doublet Models. Phys. Rept., 516:1–102, 2012. arXiv:1106.0034, doi:10.1016/j.physrep.2012.02.002.
- GH03
John F. Gunion and Howard E. Haber. The CP conserving Two-Higgs-Doublet Model: the approach to the decoupling limit. Phys. Rev., D67:075019, 2003. arXiv:hep-ph/0207010, doi:10.1103/PhysRevD.67.075019.