30 years, some 700 integrals, and 1 dessert, or: Electroweak two-loop corrections to the Zbb vertex

I. Dubovyk, A. Freitas, J. Gluza +2

The one-loop corrections to the weak mixing angle ${\sin }^2{\theta }_{eff}^b$ derived from the $Z\bar{b}b$ vertex, are known since 1985. It took another 30 years to calculate the complete e…