Electroweak radiative corrections to e+e−→νν̄H Original Research Article

The complete electroweak O(α) radiative corrections to the Higgs-boson production processes e+e−→νlν̄lH (l=e,μ,τ) are calculated in the electroweak Standard Model. For e+e−→νeν̄eH, where ZH production and W-boson fusion contribute, both production channels are added coherently. The calculation of the corrections is described in some detail including, in particular, the treatment of the Z-boson resonance in the ZH-production channel. The discussion of numerical results focusses on the total cross section as well as on angular and energy distributions of the Higgs boson. In the Gμ-scheme, the bulk of the corrections is due to initial-state radiation. The corrections turn out to reduce the total cross section by ∼10% for high energies, where the W-boson fusion dominates. In this region, the corrections depend only weakly on the energy and the production angle of the Higgs boson. Based on an analysis of the leading universal corrections, a simple improved Born approximation is introduced. This approximation describes the corrected cross section within about 3%.