Measurement of σ(Hνe νe ̄ )×BR(H → ZZ∗) and Higgs production in ZZ fusion at a 1.4 TeV CLIC collider

This paper presents the potential measurement at 1.4 TeV CLIC of the cross-section (times branching ratio) of the Higgs production via WW fusion with the Higgs subsequently de- caying in ZZ∗, σ(Hνeν ̄e)×BR(H → ZZ∗), and of the Higgs production via ZZ fusion with the Higgs subsequently decaying in bb ̄, σ(He+e−)×BR(H → bb ̄). For the H → ZZ∗ decay the hadronic final state, ZZ∗ → qq ̄qq ̄, and the semi-leptonic final state, ZZ∗ → qq ̄l+l−, are considered. The results show that σ(Hνeν ̄e)×BR(H → ZZ∗) can be measured with a precision of 18.3% and 6% for the hadronic and semi-leptonic channel, respectively. σ(He+e−)×BR(H → bb ̄) can be measured with a precision of 1.7%. This measurement also contributes to the determination of the Higgs coupling to the Z boson, gHZZ .