Charged Higgs Boson Production at e+e- Colliders in the Complex MSSM: A Full One-Loop Analysis

TL;DR

This paper provides a comprehensive one-loop calculation of charged Higgs boson production cross sections in the complex MSSM at e+e- colliders, highlighting significant loop effects crucial for future collider analyses.

Contribution

It presents the first full one-loop evaluation of charged Higgs production in the cMSSM, including QED radiation, with detailed parameter dependence analysis.

Findings

Loop corrections can reach 20% or more of tree-level results.

Sizable contributions depend on the specific production channel.

Results are vital for future linear collider precision studies.

Abstract

For the search for additional Higgs bosons in the Minimal Supersymmetric Standard Model (MSSM) as well as for future precision analyses in the Higgs sector precise knowledge of their production properties is mandatory. We evaluate the cross sections for the charged Higgs boson production at e+e- colliders in the MSSM with complex parameters (cMSSM). The evaluation is based on a full one-loop calculation of the production mechanism e+e- -> H+H- and e+e- -> H^\pm W^\mp, including soft and hard QED radiation. The dependence of the Higgs boson production cross sections on the relevant cMSSM parameters is analyzed numerically. We find sizable contributions to many cross sections. They are, depending on the production channel, roughly of 5-10% of the tree-level results, but can go up to 20% or higher. The full one-loop contributions are important for a future linear e+e- collider such as the ILC or CLIC.