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Generic diagrams contributing to the virtual corrections of the decays H ± → W ± h/H: vertex corrections (a) and corrections to the external legs (b)-(e). Diagram (f) displays the counterterm.

Generic diagrams contributing to the virtual corrections of the decays H ± → W ± h/H: vertex corrections (a) and corrections to the external legs (b)-(e). Diagram (f) displays the counterterm.

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The 2-Higgs-Doublet Model (2HDM) belongs to the simplest extensions of the Standard Model (SM) Higgs sector that are in accordance with theoretical and experimental constraints. In order to be able to properly investigate the experimental Higgs data and, in the long term to distinguish between possible models beyond the SM, precise predictions for...

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... one-loop correction Γ (1) consists of the virtual corrections, the counterterm contributions and the real corrections. The counterterms cancel the UV divergences and the real corrections the IR divergences encountered in the virtual corrections. The diagrams contributing to the latter are depicted in Fig. 2 and show the pure vertex corrections (a) and the corrections (b)-(e) to the external legs. The counterterm diagram is shown in (f). The vertex corrections comprise the 1PI diagrams given by the triangle diagrams with scalars, fermions and gauge bosons in the loops, as shown in the first two rows of Fig. 3, and the diagrams involving ...
Context 2
... legs. The counterterm diagram is shown in (f). The vertex corrections comprise the 1PI diagrams given by the triangle diagrams with scalars, fermions and gauge bosons in the loops, as shown in the first two rows of Fig. 3, and the diagrams involving four-particle vertices (last four diagrams of Fig. 3). The corrections to the external legs in Fig. 2 (b) and (c) vanish due to the OS renormalization of the scalars, while the vanishing of the mixing contribution (d) is ensured by a Slavnov-Taylor identity [59] 8 and the one of (e) by the Ward identity for an OS W ± boson. The vertex contributions with a photon in the loop lead to IR divergences that need to be canceled by the real ...
Context 3
... expansion of the two Higgs doublets Φ 1 and Φ 2 about the VEVs, cf. Eq. (2.4), leads to the mass matrices that are obtained from the terms bilinear in the Higgs fields in the 2HDM potential. ...

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