Finite-width effects in the near-threshold ZZZ and ZWW production at ILC

Abstract

We calculate the cross-section of the near-threshold off-shell $ZZZ$ and $Z{W}^{+}{W}^{-}$ production at the International Linear Collider taking into account their instability and the principal part of NLO corrections. The calculations are performed in the framework of the model of unstable particles with smeared mass-shell. We show that the contribution of the finite $Z/W$ and $H$ widths (their instability) is large in the Higgs resonance range and should be taken into account in the Higgs boson searches at future colliders.

5 pages, 6 figures

References in corpus (5)

• Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons
• Search for ZZ and Zγ^* production in p-barp collisions at sqrt(s) = 1.96 TeV and limits on anomalous ZZZ and ZZγ^* couplings
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Cited by in corpus (6)

• Diffractive gauge bosons production beyond QCD factorisation
• QCD diffractive mechanism of exclusive $W^{+}{W}^{-}$ pair production at high energies
• Higgs phenomenology in the Stealth Doublet Model
• Factorization in the model of unstable particles with continuous masses
• Mass shell smearing effects in top pair production
• Recent progress for Linear Collider SM/BSM Higgs/Electroweak Symmetry Breaking Calculations