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Computing One-Loop Amplitudes From The Holomorphic Anomaly Of Unitarity Cuts

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arxiv hep-th/0410179 v3 pith:OANIPESV submitted 2004-10-18 hep-th

Computing One-Loop Amplitudes From The Holomorphic Anomaly Of Unitarity Cuts

classification hep-th
keywords one-loopamplitudescutscomputingmethodsystematicunitarityamplitude
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We propose a systematic way to carry out the method introduced in hep-th/0410077 for computing certain unitarity cuts of one-loop N=4 amplitudes of gluons. We observe that the class of cuts for which the method works involves all next-to-MHV n-gluon one-loop amplitudes of any helicity configurations. As an application of our systematic procedure, we obtain the complete seven-gluon one-loop leading-color amplitude A_{7;1}(1-,2-,3-,4+,5+,6+,7+).

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