Six jet production at lepton colliders Original Research Article

We study electron-positron annihilations into six jets at the parton level in perturbative Quantum Chromo-Dynamics (QCD), via the elementary processes ϵ+ϵ− → qq−gggg, ϵ+ϵ− → qq−q′q−′ gg and ϵ+ϵ− → qq−q′q−′q″q−″, for massive quarks q, q′ and q″ and massless gluons g. Several numerical results of phenomenological relevance are given, at three different collider energies and for a representative selection of jet clustering algorithms. We also present helicity amplitudes and colour factors needed for the tree-level calculation.