2014/06/30 by Marta Leoni, Andrea Mauri, Alberto Santambrogio · 1 citation
Physics and Astronomy · #hep-th
paper · pdf · doi:10.1007/jhep09(2014)017
published as JHEP09(2014)017 · 38 pages, jheppub; v2: minor corrections, JHEP published version; v3: two-loop chiral propagator corrected, maximal transcendentality at two loops not respected anymore, JHEP Erratum
arxiv created 2015/01/21 · arxiv updated 2015/01/22
We compute four-point scattering amplitudes in N=2 SCQCD with general external matter configurations using N=1 superspace Feynman diagrams, at one loop in the general case and up to two loops in the fundamental sector. In the pure adjoint sector at one loop we confirm exact agreement with the corresponding amplitudes in N=4 SYM theory, supporting the idea that a closed subsector of the SCQCD might be exactly integrable. External matter in the fundamental representation breaks dual conformal invariance already at one loop and also the maximum transcendentality principle at two loops.