Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-12-21
Phys.Rev.D81:073007,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
19 pages, a few comments and references added, version published in PRD.
Scientific paper
10.1103/PhysRevD.81.073007
We calculate the one-loop electroweak corrections to e+e- to WWZ and e+e- to ZZZ and analyse their impacts on both the total cross section and some key distributions. These processes are important for the measurements of the quartic couplings of the massive gauge bosons which can be a window on the mechanism of spontaneous symmetry breaking. We find that even after subtracting the leading QED corrections, the electroweak corrections can still be large especially as the energy increases. We compare and implement different methods of dealing with potential instabilities in the routines pertaining to the loop integrals. For the real corrections we apply a dipole subtraction formalism and compare it to a phase-space slicing method.
Boudjema Fawzi
Hao Sun
Ninh Le Duc
Weber Marcus M.
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