MHV Vertices and Scattering Amplitudes in Gauge Theory
Jun-Bao Wu, Chuan-Jie Zhu
TL;DR
This paper computes gauge theory scattering amplitudes using MHV vertices within the CSW approach, confirming known results and extending calculations to include fermions and potential gravity applications.
Contribution
It introduces a method to calculate googly amplitudes with fermions using fermionic MHV vertices, expanding the applicability of the CSW approach.
Findings
Computed googly amplitudes in gauge theory consistent with known results
Extended the approach to include fermions and quark-antiquark pairs
Discussed potential extension to gravity theories
Abstract
The generic googly amplitudes in gauge theory are computed by using the Cachazo-Svrcek-Witten approach to perturbative calculation in gauge theory and the results are in agreement with the previously well-known ones. Within this approach we also discuss the parity transformation, charge conjugation and the dual Ward identity. We also extend this calculation to include fermions and the googly amplitudes with a single quark-anti-quark pair are obtained correctly from fermionic MHV vertices. At the end we briefly discuss the possible extension of this approach to gravity.
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