HET seminar: Lorenzo Magnea
Speaker: Lorenzo Magnea
Title: Factorisation and Subtraction beyond NLO
Abstract:
I will discuss the factorisation and the subtraction of infrared singularities
for scattering amplitudes and cross sections relevant for collider phenomenology.
In particular, I will focus on the relation between the factorisation of soft and collinear
In particular, I will focus on the relation between the factorisation of soft and collinear
poles in fixed-angle scattering amplitudes and the construction of local counterterms
for singular contributions to real radiation. This approach leads to general definitions
of soft and collinear counterterms to all orders in perturbation theory, and suggests
promising simplifications for the construction of subtraction algorithms beyond NLO.