Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-06-21
Nucl.Phys. B615 (2001) 385-401
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages Latex
Scientific paper
10.1016/S0550-3213(01)00436-9
We calculate a class of one-loop six-point amplitudes in the Yukawa model. The construction of multi-particle amplitudes is done in the string inspired formalism and compared to the Feynman diagrammatic approach. We show that there exists a surprisingly efficient way of calculating such amplitudes by using cyclic identities of kinematic coefficients and discuss in detail cancellation mechanisms of spurious terms. A collection of formulas which are useful for the calculation of massless hexagon amplitudes is given.
Binoth Thomas
Guillet J.-Ph.
Heinrich Georg
Schubert Christian
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