Gluon Tree Amplitudes in Open Twistor String Theory

Details Gluon Tree Amplitudes in Open Twistor String Theory Gluon Tree Amplitudes in Open Twistor String Theory

2009-09-02

arxiv.org/abs/0909.0499v2

JHEP 0912:032,2009

Physics

High Energy Physics

High Energy Physics - Theory

36 pages

Scientific paper

10.1088/1126-6708/2009/12/032

We show how the link variables of Arkani-Hamed, Cachazo, Cheung and Kaplan (ACCK), can be used to compute general gluon tree amplitudes in the twistor string. They arise from instanton sectors labelled by d, with d=n-1, where n is the number of negative helicities. Read backwards, this shows how the various forms for the tree amplitudes studied by ACCK can be grouped into contour integrals whose structure implies the existence of an underlying string theory.

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