Massive Quark-Gluon Scattering Amplitudes at Tree Level

Details Massive Quark-Gluon Scattering Amplitudes at Tree Level Massive Quark-Gluon Scattering Amplitudes at Tree Level

2007-10-08

arxiv.org/abs/0710.1300v1

Phys.Rev.D77:025011,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, 6 figures

Scientific paper

10.1103/PhysRevD.77.025011

Results for four-, five-, and six-parton tree amplitudes for massive quark-antiquark scattering with gluons are calculated using the recursion relations of Britto, Cachazo, Feng, and Witten. The required diagrams are generated using shifts of the momenta of a pair of massless legs to complex values. Checks verifying the calculations are described, and a simple formula for the shifted spinors of an internal gluon is presented.

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