Off-shell W pair production in e+e− annihilation: The CC11 process Original Research Article

The various four-fermion production channels in e+e− annihilation are discussed and the CC11 process e+e− → ƒ1μ ƒ1d ƒ2μ ƒ2d ƒ ≠ e, is studied in section d2σ/ds1 ds2, with s1, s2 being the invariant masses squared of the two fermion pairs, may be expressed by six generic functions. All but one may be found in the literature. The cross section, including initial-state radiation and the Coulomb correction, is discussed and compared with other calculations from low energies up to √s = 2 TeV.