Single Higgs boson production at future linear colliders including radiative corrections

Abstract

The next generation of high energy e + e − linear colliders is expected to operate at s ≳500 GeV. In this energy range the WW fusion channel dominates the Higgs boson production cross section e +e −→ ν ̄ νh 0/H 0 . We calculate the one-loop corrections to this process due to fermion and sfermion loops within the MSSM. We perform a detailed numerical analysis of the total cross section and the distributions of the rapidity, the transverse momentum and the production angle of the Higgs boson. The fermion–sfermion correction is substantial being of the order of −10% and is dominated by the fermion loops. In addition, we explore the possibility of polarized e +/ e − beams. In the so-called “intense coupling” scenario the production of the heavy Higgs boson H 0 is also discussed.