Radiative corrections to $e^+ e^- \to H^+ H^-$: THDM versus MSSM

A. Arhrib; G. Moultaka

doi:10.1016/s0550-3213(99)00362-4

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arXiv · hep-ph/9808317

Radiative corrections to $e^+ e^- \to H^+ H^-$: THDM versus MSSM

A. Arhrib·G. Moultaka

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Abstract

One loop radiative corrections to $e^+e^-\to H^+ H^-$ are considered at future linear collider energies, in the general type II Two Higgs Doublet Model (THDM) and in the Minimal Supersymmetric Standard Model-like (MSSM) Higgs sector. To make the comparison between THDM and MSSM tractable, we have introduced a quasi-SUSY parameterization which preserves all the tree-level Higgs mass-sum-rules of the MSSM, and involves just 3 free parameters in the Higgs sector (instead of 7 in the general THDM) and comprises the MSSM as a particular case. The model-independent soft photon contribution is isolated and shown to be substantial. Important effects come also from the contribution of the model dependent $h^0 H^+ H^-$ and $H^0 H^+ H^-$ vertices to the final state. In the MSSM, the contribution of the Higgs sector is moderate (a few percent) while in the THDM and both for small and large $\tan β$ important effects ($\sim +30%$) can be found.

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A. Arhrib, G. Moultaka. 1999-06-10. Radiative corrections to $e^+ e^- \to H^+ H^-$: THDM versus MSSM. https://doi.org/10.1016/s0550-3213(99)00362-4

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