Exact calculations of vertex $\bar{s}\gamma b$ and $\bar{s}Zb$ in the unitary gauge

Lu-sen Wu, Zhen-jun Xiao

In this paper, we present the exact calculations for the vertex $\bar{s}\gamma b$ and $\bar{s}Zb$ in the unitary gauge. We found that (a) the divergent- and $\mu$-dependent terms are lef…