Dissolving N=4 loop amplitudes into QCD tree amplitudes
Dec, 2004
8 pages
Published in:
- Phys.Rev.Lett. 94 (2005) 102002
e-Print:
- hep-th/0412265 [hep-th]
Report number:
- NSF-KITP-04-135,
- PUPT-2147
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Abstract:
We use the infrared consistency of one-loop amplitudes in N=4 Yang-Mills theory to derive a compact analytic formula for a tree-level NNMHV gluon scattering amplitude in QCD, the first such formula known. We argue that the IR conditions, coupled with recent advances in calculating one-loop box coefficients, can give a new tool for computing tree-level amplitudes in general. Our calculation suggests that many amplitudes have a structure which is even simpler than that revealed so far by current twistor-space constructions.- 12.38.Bx
- 11.55.Bq
- 11.15.Bt
- gauge field theory: Yang-Mills
- scattering amplitude: higher-order
- analytic properties
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