Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-04-07
JHEP0609:055,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, figures and text revised, final versione to be published on JHEP
Scientific paper
10.1088/1126-6708/2006/09/055
We point out that gauge bosons emissions should be carefully estimated when considering LHC observables, since real $Ws$ and $Zs$ contributions can dramatically change cross sections with respect to tree level values. Here we consider observables that are fully inclusive respect to soft gauge bosons emission and where a certain number of nonabelian isospin charges in initial and/or final states are detected. We set up a general formalism to evaluate leading, all order resummed electroweak corrections and we consider the phenomenologically relevant case of third family quark production at the LHC. In the case of $b\bar{t}$ production we find that, due to the interplay between strong and weak interactions, the production cross section can become an order of magnitude bigger than the tree level value.
Ciafaloni Paolo
Comelli Denis
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