PT Journal
AU Buchta, S
   Chachamis, G
   Draggiotis, P
   Malamos, I
   Rodrigo, G
TI On the singular behaviour of scattering amplitudes in quantum field theory
SO Journal of High Energy Physics
JI J. High Energy Phys.
PY 2014
BP 014
EP 13pp
VL 11
IS 11
DI 10.1007/JHEP11(2014)014
LA English
DE QCD Phenomenology; NLO Computations
AB We analyse the singular behaviour of one-loop integrals and scattering amplitudes in the framework of the loop-tree duality approach. We show that there is a partial cancellation of singularities at the loop integrand level among the different components of the corresponding dual representation that can be interpreted in terms of causality. The remaining threshold and infrared singularities are restricted to a finite region of the loop momentum space, which is of the size of the external momenta and can be mapped to the phase-space of real corrections to cancel the soft and collinear divergences.
ER