One-Loop Amplitudes in Supersymmetric QCD from MHV Vertices
arXiv:hep-th/0604210 · doi:10.1143/PTP.116.363
Abstract
The Cachazo-Svrcek-Witten (CSW) rule for efficiently calculating gauge theory amplitudes is extended to N=1 supersymmetric QCD (SQCD), incorporating massless quarks, in a way preserving the manifest supersymmetry. Using this extended CSW rule, we obtain compact expressions of all the one-loop MHV amplitudes in SQCD including one or two external quark-antiquark (chiral-antichiral multiplets) pairs. The collinear sigularities of the five point amplitudes are investigated to confirm the consistency of the results.
43pages,5figures,PTPTex;v2 2references and related footnote are added;v3 English is improved, to appear in Prog. Theor. Phys
References in corpus (12)
- One-Loop n-Point Gauge Theory Amplitudes, Unitarity and Collinear Limits
- Perturbative Gauge Theory As A String Theory In Twistor Space
- Fusing Gauge Theory Tree Amplitudes Into Loop Amplitudes
- Multi-Parton Amplitudes in Gauge Theories
- One-Loop Gauge Theory Amplitudes in N=4 Super Yang-Mills from MHV Vertices
- One-Loop Corrections to Two-Quark Three-Gluon Amplitudes
- Non-Supersymmetric Loop Amplitudes and MHV Vertices
- The Last of the Finite Loop Amplitudes in QCD
- A Twistor Approach to One-Loop Amplitudes in N=1 Supersymmetric Yang-Mills Theory
- Six-Quark Amplitudes from Fermionic MHV Vertices
- Orbifolding the Twistor String
- One-Loop Gauge Theory Amplitudes with an Arbitrary Number of External Legs