Amplitudes for $gg \to VV'$ and their high energy SUSY constraints

We study how the property of asymptotic helicity conservation (HCns), expected for any 2-to-2 process in the minimal supersymmetric model (MSSM), is realized in the processes gg →γγ, γZ, ZZ, W+W-, at one-loop electroweak order and very high energies. The violation of this property for the same process in the standard model (SM) is also shown. This strengthens the claim that HCns is specific to the renormalizable SUSY model, and not generally valid in the SM. HCns strongly reduces the number of nonvanishing 2-to-2 amplitudes at asymptotic energies in the MSSM.