arXiv:hep-ph/9501300·v1·High Energy Physics — Phenomenology

Heavy Higgs production and decay via $e^{+} e^{-} \to Z^{0} H^{0} \to b b ˉ Z^{0} Z^{0}$ and irreducible backgrounds at Next Linear Colliders

Abstract

The complete matrix element for $e^{+} e^{-} \ar b b ˉ Z^{0} Z^{0}$ has been computed at tree--level and applied to $Z^{0} H^{0}$ --production followed by $Z^{0} \ar b b ˉ$ and $H^{0} \ar Z^{0} Z^{0}$ , including all the irreducible background, at Next Linear Colliders. We find that, assuming flavour identification of the $Z^{0}$ --decay products, this channel, together with $e^{+} e^{-} \ar b b ˉ W^{+} W^{-}$ in which $Z^{0} H^{0} \ar (b b ˉ) (W^{+} W^{-}$ ), can be important for the study of the parameters of the Standard Model Higgs boson over the heavy mass range $2 M_{Z^{0}} \Ord M_{H^{0}} \Ord 2 m_{t}$ .

Comments: 24 pages, LaTeX (uses Feynman), 7 figures (.ps files or hardcopies of figs.2-7 available upon request)

Heavy Higgs production and decay via e+e−→Z0H0→bbˉZ0Z0 and irreducible backgrounds at Next Linear Colliders

Abstract

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Heavy Higgs production and decay via $e^{+} e^{-} \to Z^{0} H^{0} \to b b ˉ Z^{0} Z^{0}$ and irreducible backgrounds at Next Linear Colliders

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