TH Meeting on Particle Physics Phenomenology

Unitarity cuts for QCD loop amplitudes

Name: Unitarity cuts for QCD loop amplitudes
Start: 2006-04-21T14:00:00+02:00
End: 2006-04-21T15:00:00+02:00
Location: CERN

by Britto, R. (Amsterdam University)

Friday 21 Apr 2006, 14:00 → 15:00 Europe/Zurich

TH Auditorium (CERN)

TH Auditorium

CERN

Description

Unitarity cuts are used for analytic computation of loop amplitudes in gauge theories such as QCD. I will discuss a technique to carry out any finite unitarity cut integral. This technique naturally expands a one-loop amplitude in terms of a basis of known functions. Loop momentum integration is reduced to a sequence of algebraic operations. This approach allows, in particular, direct computation of one-loop amplitudes in supersymmetric gauge theories.