One-loop Qcd Interconnection Effects in Pair Production of Top Quarks
نویسنده
چکیده
We calculate the one-loop non-factorizable QCD corrections to the production and decay of pairs of top quarks at various collider experiments. These non-factorizable corrections interconnect the different production and decay stages of the off-shell top-pair production processes. This in particular affects the invariant-mass distributions of the off-shell top quarks, resulting in a shift of the maximum of the distorted Breit–Wigner distributions. Although the nonfactorizable corrections can be large, the actual shift in the mass as determined from the peak position of the corrected Breit–Wigner line-shape is below 100MeV.
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