HET seminar: Lorenzo Magnea – University of Copenhagen

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 
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.