Dual conformal symmetry of 1-loop NMHV amplitudes in N=4 SYM theory

Details Dual conformal symmetry of 1-loop NMHV amplitudes in N=4 SYM theory Dual conformal symmetry of 1-loop NMHV amplitudes in N=4 SYM theory

2009-05-27

arxiv.org/abs/0905.4379v1

Physics

High Energy Physics

High Energy Physics - Theory

20 pages, 2 figures

Scientific paper

We prove that 1-loop n-point NMHV superamplitudes in N=4 SYM theory are dual conformal covariant for all numbers n of external particles (after regularization and subtraction of IR divergences). This property was previously established for n < 10 in arXiv:0808.0491. We derive an explicit representation of these superamplitudes in terms of dual conformal cross-ratios. We also show that all the 1-loop `box coefficients' obtained from maximal cuts of N^kMHV n-point functions are covariant under dual conformal transformations.

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