Higgs decays into charginos and neutralinos in the complex MSSM: a full one-loop analysis

We discuss the automatised calculation of the Higgs mass in renormalisable supersymmetric models with complex parameters at the two-loop level. Our setup is based on the public codes SARAH and SPheno, which can now compute the two-loop corrections to masses of all neutral scalars in such theories. The generic ansatz for these calculations and the handling of the 'Goldstone Boson catastrophe' is described. It is shown that we find perfect agreement with other existing two-loop calculations performed in the DR scheme. We also use the functionality to derive results for the MSSM and NMSSM not available before: the Higgs mass in the constrained version of the complex MSSM and the impact of CP phases in the two-loop corrections beyond O(α s α t ) for the scale-invariant NMSSM are briefly analysed.

Section: Introductionmentioning

confidence: 99%

The Higgs mass in the CP violating MSSM, NMSSM and beyond

Goodsell

Staub

2017

“…In order to yield a sufficient accuracy, one-loop corrections to the various Higgs boson production and decay modes have to be considered. Full one-loop calculations in the cMSSM for various Higgs boson decays to SM fermions, scalar fermions and charginos/neutralinos have been presented over the last years [30][31][32]. For the decay to SM fermions see also Refs.…”

Section: Introductionmentioning

confidence: 99%

Charged Higgs Boson production at $$e^+e^-$$ e + e - colliders in the complex MSSM: a full one-loop analysis

Heinemeyer

Schappacher

2016

Self Cite

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 ± W ∓ , 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.

“…The renormalization is chosen to be identical as for the various Higgs boson decay calculations; see, e.g., Refs. [30,31].…”

Section: Discussionmentioning

confidence: 99%

“…In order to yield a sufficient accuracy, one-loop corrections to the various Higgs boson production and decay modes have to be considered. Full one-loop calculations in the cMSSM for various Higgs boson decays to SM fermions, scalar fermions and charginos/neutralinos have been presented over the last years [29][30][31]. For the decay to SM fermions see also Refs.…”

Section: Introductionmentioning

confidence: 99%

Neutral Higgs boson production at $$e^+e^-$$ e + e - colliders in the complex MSSM: a full one-loop analysis

Heinemeyer¹,

Schappacher²

2016

Self Cite

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 neutral 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 i Z , h i γ, h i h j (i, j = 1, 2, 3), 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 10-20 % of the tree-level results, but can go up to 50 % or higher. The full one-loop contributions are important for a future linear e + e − collider such as the ILC or CLIC. There are plans to implement the evaluation of the Higgs boson production cross sections into the code FeynHiggs.