Ambar Jain (CMU)

A Formalism for the Treatment of Rapidity Logarithms in Quantum Field Theory

Reliable predictions for observables in quantum field theory require factorization and resummations. The class of observables which are sensitive to soft recoil effects are particularly challenging to factorize and resum since they involve rapidity logarithms. Such observables include: transverse momentum distributions at pT much less then the high energy scattering scale, jet broadening, exclusive hadroproduction and decay, as well as the Sudakov form factor. I will present a formalism which allows one to factorize and resum the perturbative series for such observables in a systematic fashion through the notion of a “rapidity renormalization group”.

Jan 30 at 4pm in Geo/Phys Room 407