Electroweak radiative corrections to e+e−→tt̄h at linear colliders

We calculate the O (α ew ) electroweak radiative corrections to e + e − →t t h at a electron–positron linear collider (LC) in the standard model. We analyze the dependence of the O (α ew ) corrections on the Higgs boson mass mh and colliding energy s , and find that the corrections significantly decrease or increase the Born cross section depending on the colliding energy. The numerical results show that the O (α ew ) relative correction is strongly related to the Higgs boson mass when s =500 GeV, and for mh=150 GeV the relative correction ranges from −31.3% to 2.3% as the increment of the colliding energy from 500 GeV to 2 TeV.