Higgs-boson decay to four fermions in the Two-Higgs-Doublet Model and Prophecy4f

TL;DR

This paper provides a detailed next-to-leading-order calculation of the Higgs boson decay into four fermions within the Two-Higgs-Doublet Model, including implementation into Prophecy4f and comparison with Standard Model predictions.

Contribution

It introduces a comprehensive NLO calculation for Higgs decays in the 2HDM and integrates it into the Prophecy4f tool, enabling precise predictions and deviations analysis.

Findings

NLO corrections significantly affect decay width predictions.

Deviations from the Standard Model are quantifiable with the new calculation.

Multiple renormalization schemes are analyzed for robustness.

Abstract

We present the next-to-leading-order calculation of the partial decay widths of the light CP-even Higgs boson decaying into four fermions in the Two-Higgs-Doublet Model. The four different renormalization schemes applied in the calculation are described as well as the calculation and its implementation into the analysis tool Prophecy4f. Some sample results show the size of the next-to-leading-order correction as well as the overall size of the deviation from the Standard Model prediction.