Six--jet decay of off--shell WW pairs at $e^{+}{e}^{-}$ colliders

Abstract

Six--jet events via WW pairs, $e^{+}{e}^{-}\text{ar}{W}^{+}{W}^{-}\text{ar}{q}_1\overline{q_1}{q}_2\overline{q_2}gg$ are studied at tree level using helicity amplitudes. This is the dominant production mechanism for six--jet final states at Lep II energy. ISR effects are taken into account. Total production rates as a function of $y_{cut}$ are given. The relevance of these processes for the issue of colour reconnection is discussed. The cross section for five--jet production via WW pairs at Lep II is also presented.

Comments: 8 LaTex pages, 7 figs tarred and compressed