Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-07-16
Phys.Rev.D61:011301,2000
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages and 3 figures; version submitted to Phys.ReV.D,Rapid. e-mail: renard@lpm.univ-montp2.fr
Scientific paper
10.1103/PhysRevD.61.011301
We compute the one loop contribution coming from vertex and box diagrams, where virtual top quarks are exchanged, to the asymptotic energy behaviour of $b\bar b$ pair production at future lepton colliders. We find that the effect of the top mass is an extra linear logarithmic term of Sudakov type that is not present in the case of (u,d,s,c) production. This appears to be particularly relevant in the case of the $b\bar{b}$ cross section.
Beccaria Matteo
Ciafaloni Paolo
Comelli Denis
Renard Fernand M.
Verzegnassi Claudio
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