The mass is 80.410 ± 0.180 GeV (Abe et al. 1995).
References
Abe, F.; Albrow, M. G.; Amendolia, S. R.; Amidei, D.; Antos, J. et al. "Limits on WWZ and Couplings from WW and WZ Production in Collisions at Tev." Phys. Rev. Let. 75, 1017-1022, 1995.
