$b \bar b W^+ W^-$ production at hadron colliders. Top signal and irreducible backgrounds

Ballestrero, A.; Maina, E.; Pizzio, M.

$b \bar b W^+ W^-$ production at hadron colliders. Top signal and irreducible backgrounds

Authors

Ballestrero, A.

Maina, E.

Pizzio, M.

Description

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.
13 LaTex pages, 2 figs using feynman.sty, 5 ps figures