Off-shell $W$-pair production in $e^{+}{e}^{-}$-annihilation. Initial state radiation

D. Bardin, M. Bilenky, A. Olchevski +1

With a current-splitting technique, we calculate the gauge-invariant initial-state radiation to order \oalf\ with soft-photon exponentiation for on- and off-shell $W$-pair producti…