Soft and Collinear Functions for the Standard Model

Understand

Radiative corrections to high energy scattering processes were given previously in terms of universal soft and collinear functions.

• This paper gives the collinear functions for all standard model particles, the general form of the soft function, and explicit expressions for the soft functions for fermion-fermion scattering, longitudinal and transverse gauge boson production, single W/Z production, and associated Higgs production.
• An interesting subtlety in the use of the Goldstone boson equivalence theorem for longitudinal W+ production is discussed.