出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We consider the factorization properties of on-shell QCD amplitudes with massive partons in
the limit when all kinematical invariants are large compared to the parton mass and discuss the
structure of their infrared singularities. The dimensionally regulated soft poles and the large
collinear logarithms of the parton masses exponentiate to all orders. Based on this factorization
a simple relation between massless and massive scattering amplitudes in gauge theories can be
established. We present recent applications of this relation for the calculation of the two-loop
virtual QCD corrections to the hadro-production of heavy quarks.
