TY  - JOUR
AU  - Aguilera-Verdugo, J. J.
AU  - Driencourt-Mangin, F.
AU  - Plenter, J.
AU  - Ramirez-Uribe, S.
AU  - Rodrigo, G.
AU  - Sborlini, G. F. R.
AU  - Torres Bobadilla, W. J.
AU  - Tracz, S.
PY  - 2019
DA  - 2019//
TI  - Causality, unitarity thresholds, anomalous thresholds and infrared singularities from the loop-tree duality at higher orders
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 163 - 12pp
VL  - 12
IS  - 12
PB  - Springer
KW  - Duality in Gauge Field Theories
KW  - Perturbative QCD
KW  - Scattering Amplitudes
AB  - We present the first comprehensive analysis of the unitarity thresholds and anomalous thresholds of scattering amplitudes at two loops and beyond based on the loop- tree duality, and show how non-causal unphysical thresholds are locally cancelled in an efficient way when the forest of all the dual on-shell cuts is considered as one. We also prove that soft and collinear singularities at two loops and beyond are restricted to a compact region of the loop three-momenta, which is a necessary condition for implementing a local cancellation of loop infrared singularities with the ones appearing in real emission; without relying on a subtraction formalism.
SN  - 1029-8479
UR  - https://arxiv.org/abs/1904.08389
UR  - https://doi.org/10.1007/JHEP12(2019)163
DO  - 10.1007/JHEP12(2019)163
LA  - English
N1  - WOS:000513535500003
ID  - Aguilera-Verdugo_etal2019
ER  -