Possible check of neutral weak vector-bosons that couple to μ+μ− only

In connection with recent assumptions, that weak vector-bosons might couple only toμ ⁺ μ ^? currents (and not toe ⁺ e ^?-ones) the question arises, how to check these bosons, since no collidingμ ⁺ μ ^? beams are available. We have shown in this paper that this check could be performed by means of the resonance appearing in a pair production process fromμ-beams and that this process would work atμ-energies beyond 20 Bev.