Abstract
We evaluate the full next-to-leading order supersymmetric (SUSY) electroweak and SUSY-QCD corrections to the on-shell two-body decays of the charged Higgs bosons in the framework of the next-to-minimal supersymmetric extension of the Standard Model (NMSSM) allowing also for CP violation. We furthermore provide the possibility to choose between different renormalization schemes in the electroweakino and the squark and slepton sectors. Our corrections are implemented in the code NMSSMCALCEW and thus complete the one-loop corrections of the charged Higgs boson decays which so far only included the state-of-the-art QCD corrections and the resummed SUSY-electroweak and SUSY-QCD corrections. We investigate the impact of the NLO corrections including the newly computed higher-order corrections for each decay mode in a wide range of the parameter space that is allowed by the theoretical and experimental constraints as well as the effect of CP violation and the dependence on the choice of the renormalization scheme. The new version of NMSSMCALCEW is made publicly available.
Highlights
Among the most popular and best studied models beyond the Standard Model (SM) is supersymmetry (SUSY) [6,7,8,9,10,11,12,13,14,15,16], which requires at least two complex Higgs doublets
We evaluate the full next-to-leading order supersymmetric (SUSY) electroweak and SUSY-QCD corrections to the on-shell two-body decays of the charged Higgs bosons in the framework of the next-to-minimal supersymmetric extension of the Standard Model (NMSSM) allowing for CP violation
The NMSSM features CP violation in the Higgs sector already at tree level that still allows for non-zero NMSSM-specific CP-violating phases despite the strong experimental constraints from the measurement of the electron electric dipole moment (EDM) by the ACME collaboration [36] which is due to cancellations of the NMSSMspecific contributions to the EDMs [37]
Summary
Among the most popular and best studied models beyond the SM is supersymmetry (SUSY) [6,7,8,9,10,11,12,13,14,15,16], which requires at least two complex Higgs doublets. We complete the one-loop higher-order corrections to the on-shell charged Higgs boson decays both in the CP-conserving and CP-violating NMSSM. In the previous implementation in our code NMSSMCALC [53], which computes the NMSSM Higgs mass spectrum and decays in both the CP-conserving and CP-violating case, the charged Higgs boson decay widths so far only included the state-ofthe-art QCD corrections for the quark final states and the resummed SUSY-QCD and SUSY-electroweak corrections in the quark and lepton final states, respectively. The aim of this paper is to improve the accuracy for the predictions of the charged Higgs decay widths by computing the remaining one-loop SUSY-electroweak and SUSY-QCD corrections to all charged Higgs boson decays into on-shell two-particle final states in the framework of the CP-conserving and CPviolating NMSSM.
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