On the amplitude/Wilson loop duality in N=2 SCQCD

On the amplitude/Wilson loop duality in N=2 SCQCD

We compute the four-point amplitude with external adjoint particles in N=2 SCQCD at two loops using N=1 superspace Feynman diagrams, extending the results of arXiv:1406.7283. We consider the diagrammatic difference with the corresponding process of N=4 SYM finding a non-vanishing result, which is a...

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Bibliographic Details
Main Authors: Marta Leoni, Andrea Mauri, Alberto Santambrogio
Format: Article
Language:English
Published: Elsevier 2015-07-01
Series:Physics Letters B
Subjects:
Scattering amplitudes
Superconformal QCD
Integrability
Superspace
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269315004359
Description
Summary:We compute the four-point amplitude with external adjoint particles in N=2 SCQCD at two loops using N=1 superspace Feynman diagrams, extending the results of arXiv:1406.7283. We consider the diagrammatic difference with the corresponding process of N=4 SYM finding a non-vanishing result, which is a non-trivial function of the kinematic variables. This demonstrates that in N=2 SCQCD, even in the sector with external particles in the vector multiplet, the amplitude/Wilson loop duality is inevitably broken at two loops.
ISSN:0370-2693
1873-2445

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