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We present the results of a complete analysis of the one loop electroweakcorrections to $e^-e^+\to\gamma\gamma, ~Z\gamma, ~ZZ$ in the Standard (SM) andthe Minimal Supersymmetric Standard Model (MSSM). A special emphasis is put onthe high energy behaviour of the various helicity amplitudes and the way thelogarithmic structure is generated. The large magnitude of these effects, whichinduce striking differences between the SM and MSSM cases at high energies,offers the possibility of making global tests which could check the consistencyof these models, and even decide whether any additional new physics isrequired.Comment: Short version (16 pages and 9 figures) of the paper hep-ph/0207273,  to appear in Phy.Rev.D. e-mail: renard@lpm.univ-montp2.f

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

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Processese−e+→γγ,Zγ,ZZin …