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arXiv · 0904.2766

Solving for tadpole coefficients in one-loop amplitudes

Ruth Britto·Bo Feng
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Abstract

One-loop amplitudes may be expanded in a basis of scalar integrals multiplied by rational coefficients. We relate the coefficient of the one-point integral to the coefficients of higher-point integrals, by considering the effects of introducing an additional, unphysical propagator, subject to certain conditions.

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Ruth Britto, Bo Feng. 2011-01-17. Solving for tadpole coefficients in one-loop amplitudes. https://doi.org/10.1016/j.physletb.2009.10.038

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