b bar b W^+ W^- production at hadron colliders. Top signal and irreducible backgrounds
classification
✦ hep-ph
keywords
backgroundssignalirreducibleanalyzechannelscolliderscompletecompute
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We compute complete tree level matrix elements for $gg , q \bar q \rightarrow b \bar b W^+W^-$. We analyze the irreducible backgrounds to top signal at the Tevatron and at the LHC. Their contribution to the total cross section is about $5 \%$ at the LHC, due to single resonant channels. Several distributions with contributions from signal and backgrounds are presented.
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